Merge pull request #2360 from mtrmac/k8s.gcr.io-6

[release-1.6] Refer to registry.k8s.io instead of k8s.gcr.io

.cirrus.yml

@@ -20,12 +20,23 @@ env:
     # Save a little typing (path relative to $CIRRUS_WORKING_DIR)
     SCRIPT_BASE: "./contrib/cirrus"
 
+    ####
+    #### Cache-image names to test with (double-quotes around names are critical)
+    ####
+    FEDORA_NAME: "fedora-36"
+    PRIOR_FEDORA_NAME: "fedora-35"
+    UBUNTU_NAME: "ubuntu-2110"
+
     # Google-cloud VM Images
-    IMAGE_SUFFIX: "c20241107t210000z-f41f40d13"
+    IMAGE_SUFFIX: "c4955393725038592"
     FEDORA_CACHE_IMAGE_NAME: "fedora-${IMAGE_SUFFIX}"
+    PRIOR_FEDORA_CACHE_IMAGE_NAME: "prior-fedora-${IMAGE_SUFFIX}"
+    UBUNTU_CACHE_IMAGE_NAME: "ubuntu-${IMAGE_SUFFIX}"
 
     # Container FQIN's
     FEDORA_CONTAINER_FQIN: "quay.io/libpod/fedora_podman:${IMAGE_SUFFIX}"
+    PRIOR_FEDORA_CONTAINER_FQIN: "quay.io/libpod/prior-fedora_podman:${IMAGE_SUFFIX}"
+    UBUNTU_CONTAINER_FQIN: "quay.io/libpod/ubuntu_podman:${IMAGE_SUFFIX}"
 
     # Built along with the standard PR-based workflow in c/automation_images
     SKOPEO_CIDEV_CONTAINER_FQIN: "quay.io/libpod/skopeo_cidev:${IMAGE_SUFFIX}"
@@ -42,19 +53,17 @@ validate_task:
     # The git-validation tool doesn't work well on branch or tag push,
     # under Cirrus-CI, due to challenges obtaining the starting commit ID.
     # Only do validation for PRs.
-    only_if: &is_pr $CIRRUS_PR != ''
+    only_if: $CIRRUS_PR != ''
     container:
         image: '${SKOPEO_CIDEV_CONTAINER_FQIN}'
         cpu: 4
         memory: 8
-    setup_script: |
-        make tools
-    test_script: |
+    script: |
         make validate-local
         make vendor && hack/tree_status.sh
 
 doccheck_task:
-    only_if: *is_pr
+    only_if: $CIRRUS_PR != ''
     depends_on:
       - validate
     container:
@@ -67,56 +76,17 @@ doccheck_task:
       # TODO: Can't use 'runner.sh setup' inside container.  However,
       # removing the pre-installed package is the only necessary step
       # at the time of this comment.
-      dnf remove -y skopeo  # Guarantee non-interference
+      dnf erase -y skopeo  # Guarantee non-interference
       "${SKOPEO_PATH}/${SCRIPT_BASE}/runner.sh" build
       "${SKOPEO_PATH}/${SCRIPT_BASE}/runner.sh" doccheck
 
-osx_task:
-    # Don't run for docs-only builds.
-    # Also don't run on release-branches or their PRs,
-    # since base container-image is not version-constrained.
-    only_if: &not_docs_or_release_branch >-
-        ($CIRRUS_BASE_BRANCH == $CIRRUS_DEFAULT_BRANCH ||
-         $CIRRUS_BRANCH == $CIRRUS_DEFAULT_BRANCH ) &&
-        $CIRRUS_CHANGE_TITLE !=~ '.*CI:DOCS.*'
-    depends_on:
-        - validate
-    persistent_worker: &mac_pw
-        labels:
-            os: darwin
-            arch: arm64
-            purpose: prod
-    env:
-        CIRRUS_WORKING_DIR: "$HOME/ci/task-${CIRRUS_TASK_ID}"
-        # Prevent cache-pollution fron one task to the next.
-        GOPATH: "$CIRRUS_WORKING_DIR/.go"
-        GOCACHE: "$CIRRUS_WORKING_DIR/.go/cache"
-        GOENV: "$CIRRUS_WORKING_DIR/.go/support"
-        GOSRC: "$HOME/ci/task-${CIRRUS_TASK_ID}"
-        TMPDIR: "/private/tmp/ci"
-    # This host is/was shared with potentially many other CI tasks.
-    # The previous task may have been canceled or aborted.
-    prep_script: &mac_cleanup "contrib/cirrus/mac_cleanup.sh"
-    test_script:
-        - export PATH=$GOPATH/bin:$PATH
-        - go version
-        - go env
-        - make tools
-        - make validate-local test-unit-local bin/skopeo
-        - bin/skopeo -v
-    # This host is/was shared with potentially many other CI tasks.
-    # Ensure nothing is left running while waiting for the next task.
-    always:
-        task_cleanup_script: *mac_cleanup
-
 
 cross_task:
     alias: cross
-    only_if: >-
-        $CIRRUS_CHANGE_TITLE !=~ '.*CI:DOCS.*'
+    only_if: &not_docs $CIRRUS_CHANGE_TITLE !=~ '.*CI:DOCS.*'
     depends_on:
         - validate
-    gce_instance: &standardvm
+    gce_instance:
         image_project: libpod-218412
         zone: "us-central1-f"
         cpu: 2
@@ -133,42 +103,6 @@ cross_task:
         "${GOSRC}/${SCRIPT_BASE}/runner.sh" cross
 
 
-ostree-rs-ext_task:
-    alias: proxy_ostree_ext
-    only_if: *not_docs_or_release_branch
-    # WARNING: This task potentially performs a container image
-    # build (on change) with runtime package installs.  Therefore,
-    # its behavior can be unpredictable and potentially flake-prone.
-    # In case of emergency, uncomment the next statement to bypass.
-    #
-    # skip: $CI == "true"
-    #
-    depends_on:
-        - validate
-    # Ref: https://cirrus-ci.org/guide/docker-builder-vm/#dockerfile-as-a-ci-environment
-    container:
-        # The runtime image will be rebuilt on change
-        dockerfile: contrib/cirrus/ostree_ext.dockerfile
-        docker_arguments:  # required build-args
-            BASE_FQIN: quay.io/coreos-assembler/fcos-buildroot:testing-devel
-            CIRRUS_IMAGE_VERSION: 3
-    env:
-        EXT_REPO_NAME: ostree-rs-ext
-        EXT_REPO_HOME: $CIRRUS_WORKING_DIR/../$EXT_REPO_NAME
-        EXT_REPO: https://github.com/ostreedev/${EXT_REPO_NAME}.git
-    skopeo_build_script:
-        - dnf builddep -y skopeo
-        - make
-        - make install
-    proxy_ostree_ext_build_script:
-        - git clone --depth 1 $EXT_REPO $EXT_REPO_HOME
-        - cd $EXT_REPO_HOME
-        - cargo test --no-run
-    proxy_ostree_ext_test_script:
-        - cd $EXT_REPO_HOME
-        - cargo test -- --nocapture --quiet
-
-
 #####
 ##### NOTE: This task is subtantially duplicated in the containers/image
 ##### repository's `.cirrus.yml`.  Changes made here should be fully merged
@@ -176,10 +110,7 @@ ostree-rs-ext_task:
 #####
 test_skopeo_task:
     alias: test_skopeo
-    # Don't test for [CI:DOCS], [CI:BUILD].
-    only_if: >-
-        $CIRRUS_CHANGE_TITLE !=~ '.*CI:BUILD.*' &&
-        $CIRRUS_CHANGE_TITLE !=~ '.*CI:DOCS.*'
+    only_if: *not_docs
     depends_on:
         - validate
     gce_instance:
@@ -224,9 +155,10 @@ meta_task:
         image: quay.io/libpod/imgts:latest
     env:
         # Space-separated list of images used by this repository state
-        IMGNAMES: |
+        IMGNAMES: >-
             ${FEDORA_CACHE_IMAGE_NAME}
-            build-push-${IMAGE_SUFFIX}
+            ${PRIOR_FEDORA_CACHE_IMAGE_NAME}
+            ${UBUNTU_CACHE_IMAGE_NAME}
         BUILDID: "${CIRRUS_BUILD_ID}"
         REPOREF: "${CIRRUS_REPO_NAME}"
         GCPJSON: ENCRYPTED[6867b5a83e960e7c159a98fe6c8360064567a071c6f4b5e7d532283ecd870aa65c94ccd74bdaa9bf7aadac9d42e20a67]
@@ -246,9 +178,7 @@ success_task:
     depends_on:
         - validate
         - doccheck
-        - osx
         - cross
-        - proxy_ostree_ext
         - test_skopeo
         - meta
     container: *smallcontainer

.github/dependabot.yml

@@ -0,0 +1,10 @@
+version: 2
+updates:
+- package-ecosystem: gomod
+  directory: "/"
+  schedule:
+    interval: daily
+    time: "10:00"
+    timezone: Europe/Berlin
+  open-pull-requests-limit: 10
+

.github/renovate.json5

@@ -1,52 +0,0 @@
-/*
-   Renovate is a service similar to GitHub Dependabot, but with
-   (fantastically) more configuration options.  So many options
-   in fact, if you're new I recommend glossing over this cheat-sheet
-   prior to the official documentation:
-
-   https://www.augmentedmind.de/2021/07/25/renovate-bot-cheat-sheet
-
-   Configuration Update/Change Procedure:
-     1. Make changes
-     2. Manually validate changes (from repo-root):
-
-        podman run -it \
-            -v ./.github/renovate.json5:/usr/src/app/renovate.json5:z \
-            docker.io/renovate/renovate:latest \
-            renovate-config-validator
-     3. Commit.
-
-   Configuration Reference:
-   https://docs.renovatebot.com/configuration-options/
-
-   Monitoring Dashboard:
-   https://app.renovatebot.com/dashboard#github/containers
-
-   Note: The Renovate bot will create/manage it's business on
-         branches named 'renovate/*'.  Otherwise, and by
-         default, the only the copy of this file that matters
-         is the one on the `main` branch.  No other branches
-         will be monitored or touched in any way.
-*/
-
-{
-  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-
-  /*************************************************
-   ****** Global/general configuration options *****
-   *************************************************/
-
-  // Re-use predefined sets of configuration options to DRY
-  "extends": [
-    // https://github.com/containers/automation/blob/main/renovate/defaults.json5
-    "github>containers/automation//renovate/defaults.json5"
-  ],
-
-  // Permit automatic rebasing when base-branch changes by more than
-  // one commit.
-  "rebaseWhen": "behind-base-branch",
-
-  /*************************************************
-   *** Repository-specific configuration options ***
-   *************************************************/
-}

.github/workflows/check_cirrus_cron.yml

@@ -3,18 +3,100 @@
 # See also:
 # https://github.com/containers/podman/blob/main/.github/workflows/check_cirrus_cron.yml
 
+# Format Ref: https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-syntax-for-github-actions
+
+# Required to un-FUBAR default ${{github.workflow}} value
+name: check_cirrus_cron
+
 on:
-  # Note: This only applies to the default branch.
-  schedule:
-    # N/B: This should correspond to a period slightly after
-    # the last job finishes running.  See job defs. at:
-    # https://cirrus-ci.com/settings/repository/6706677464432640
-    - cron:  '03 03 * * 1-5'
-  # Debug: Allow triggering job manually in github-actions WebUI
-  workflow_dispatch: {}
+    # Note: This only applies to the default branch.
+    schedule:
+        # N/B: This should correspond to a period slightly after
+        # the last job finishes running.  See job defs. at:
+        # https://cirrus-ci.com/settings/repository/6706677464432640
+        - cron:  '59 23 * * 1-5'
+    # Debug: Allow triggering job manually in github-actions WebUI
+    workflow_dispatch: {}
+
+env:
+    # Debug-mode can reveal secrets, only enable by a secret value.
+    # Ref: https://help.github.com/en/actions/configuring-and-managing-workflows/managing-a-workflow-run#enabling-step-debug-logging
+    ACTIONS_STEP_DEBUG: '${{ secrets.ACTIONS_STEP_DEBUG }}'
+    # CSV listing of e-mail addresses for delivery failure or error notices
+    RCPTCSV: rh.container.bot@gmail.com,podman-monitor@lists.podman.io
+    # Filename for table of cron-name to build-id data
+    # (must be in $GITHUB_WORKSPACE/artifacts/)
+    NAME_ID_FILEPATH: './artifacts/name_id.txt'
 
 jobs:
-  # Ref: https://docs.github.com/en/actions/using-workflows/reusing-workflows
-  call_cron_failures:
-    uses: containers/podman/.github/workflows/check_cirrus_cron.yml@main
-    secrets: inherit
+    cron_failures:
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v2
+              with:
+                  persist-credentials: false
+
+            # Avoid duplicating cron_failures.sh in skopeo repo.
+            - uses: actions/checkout@v2
+              with:
+                  repository: containers/podman
+                  path: '_podman'
+                  persist-credentials: false
+
+            - name: Get failed cron names and Build IDs
+              id: cron
+              run: './_podman/.github/actions/${{ github.workflow }}/${{ github.job }}.sh'
+
+            - if: steps.cron.outputs.failures > 0
+              shell: bash
+              # Must be inline, since context expressions are used.
+              # Ref: https://docs.github.com/en/free-pro-team@latest/actions/reference/context-and-expression-syntax-for-github-actions
+              run: |
+                set -eo pipefail
+                (
+                echo "Detected one or more Cirrus-CI cron-triggered jobs have failed recently:"
+                echo ""
+
+                while read -r NAME BID; do
+                    echo "Cron build '$NAME' Failed: https://cirrus-ci.com/build/$BID"
+                done < "$NAME_ID_FILEPATH"
+
+                echo ""
+                echo "# Source: ${{ github.workflow }} workflow on ${{ github.repository }}."
+                # Separate content from sendgrid.com automatic footer.
+                echo ""
+                echo ""
+                ) > ./artifacts/email_body.txt
+
+            - if: steps.cron.outputs.failures > 0
+              name: Send failure notification e-mail
+              # Ref: https://github.com/dawidd6/action-send-mail
+              uses: dawidd6/action-send-mail@v2.2.2
+              with:
+                server_address: ${{secrets.ACTION_MAIL_SERVER}}
+                server_port: 465
+                username: ${{secrets.ACTION_MAIL_USERNAME}}
+                password: ${{secrets.ACTION_MAIL_PASSWORD}}
+                subject: Cirrus-CI cron build failures on ${{github.repository}}
+                to: ${{env.RCPTCSV}}
+                from: ${{secrets.ACTION_MAIL_SENDER}}
+                body: file://./artifacts/email_body.txt
+
+            - if: always()
+              uses: actions/upload-artifact@v2
+              with:
+                  name: ${{ github.job }}_artifacts
+                  path: artifacts/*
+
+            - if: failure()
+              name: Send error notification e-mail
+              uses: dawidd6/action-send-mail@v2.2.2
+              with:
+                server_address: ${{secrets.ACTION_MAIL_SERVER}}
+                server_port: 465
+                username: ${{secrets.ACTION_MAIL_USERNAME}}
+                password: ${{secrets.ACTION_MAIL_PASSWORD}}
+                subject: Github workflow error on ${{github.repository}}
+                to: ${{env.RCPTCSV}}
+                from: ${{secrets.ACTION_MAIL_SENDER}}
+                body: "Job failed: https://github.com/${{github.repository}}/actions/runs/${{github.run_id}}"

.github/workflows/issue_pr_lock.yml

@@ -1,20 +0,0 @@
----
-
-# See also:
-# https://github.com/containers/podman/blob/main/.github/workflows/issue_pr_lock.yml
-
-on:
-  schedule:
-    - cron:  '0 0 * * *'
-  # Debug: Allow triggering job manually in github-actions WebUI
-  workflow_dispatch: {}
-
-jobs:
-  # Ref: https://docs.github.com/en/actions/using-workflows/reusing-workflows
-  closed_issue_discussion_lock:
-    uses: containers/podman/.github/workflows/issue_pr_lock.yml@main
-    secrets: inherit
-    permissions:
-      contents: read
-      issues: write
-      pull-requests: write

.github/workflows/multi-arch-build.yaml

@@ -0,0 +1,209 @@
+---
+
+# Please see contrib/<reponame>image/README.md for details on the intentions
+# of this workflow.
+#
+# BIG FAT WARNING:  This workflow is duplicated across containers/skopeo,
+#                   containers/buildah, and containers/podman.  ANY AND
+#                   ALL CHANGES MADE HERE MUST BE MANUALLY DUPLICATED
+#                   TO THE OTHER REPOS.
+
+name: build multi-arch images
+
+on:
+  # Upstream tends to be very active, with many merges per day.
+  # Only run this daily via cron schedule, or manually, not by branch push.
+  schedule:
+    - cron:  '0 8 * * *'
+  # allows to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  multi:
+    name: multi-arch image build
+    env:
+      REPONAME: skopeo  # No easy way to parse this out of $GITHUB_REPOSITORY
+      # Server/namespace value used to format FQIN
+      REPONAME_QUAY_REGISTRY: quay.io/skopeo
+      CONTAINERS_QUAY_REGISTRY: quay.io/containers
+      # list of architectures for build
+      PLATFORMS: linux/amd64,linux/s390x,linux/ppc64le,linux/arm64
+      # Command to execute in container to obtain project version number
+      VERSION_CMD: "--version"  # skopeo is the entrypoint
+
+    # build several images (upstream, testing, stable) in parallel
+    strategy:
+      # By default, failure of one matrix item cancels all others
+      fail-fast: false
+      matrix:
+        # Builds are located under contrib/<reponame>image/<source> directory
+        source:
+          - upstream
+          - testing
+          - stable
+    runs-on: ubuntu-latest
+    # internal registry caches build for inspection before push
+    services:
+      registry:
+        image: quay.io/libpod/registry:2
+        ports:
+          - 5000:5000
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+        with:
+          driver-opts: network=host
+          install: true
+
+      - name: Build and locally push image
+        uses: docker/build-push-action@v2
+        with:
+          context: contrib/${{ env.REPONAME }}image/${{ matrix.source }}
+          file: ./contrib/${{ env.REPONAME }}image/${{ matrix.source }}/Dockerfile
+          platforms: ${{ env.PLATFORMS }}
+          push: true
+          tags: localhost:5000/${{ env.REPONAME }}/${{ matrix.source }}
+
+      # Simple verification that stable images work, and
+      # also grab version number use in forming the FQIN.
+      - name: amd64 container sniff test
+        if: matrix.source == 'stable'
+        id: sniff_test
+        run: |
+          podman pull --tls-verify=false \
+                            localhost:5000/$REPONAME/${{ matrix.source }}
+          VERSION_OUTPUT=$(podman run \
+                           localhost:5000/$REPONAME/${{ matrix.source }} \
+                           $VERSION_CMD)
+          echo "$VERSION_OUTPUT"
+          VERSION=$(awk -r -e "/^${REPONAME} version /"'{print $3}' <<<"$VERSION_OUTPUT")
+          test -n "$VERSION"
+          echo "::set-output name=version::$VERSION"
+
+      - name: Generate image FQIN(s) to push
+        id: reponame_reg
+        run: |
+          if [[ "${{ matrix.source }}" == 'stable' ]]; then
+            # The command version in image just built
+            VERSION='v${{ steps.sniff_test.outputs.version }}'
+            # workaround vim syntax-highlight bug: '
+            # Push both new|updated version-tag and latest-tag FQINs
+            FQIN="$REPONAME_QUAY_REGISTRY/stable:$VERSION,$REPONAME_QUAY_REGISTRY/stable:latest"
+          elif [[ "${{ matrix.source }}" == 'testing' ]]; then
+            # Assume some contents changed, always push latest testing.
+            FQIN="$REPONAME_QUAY_REGISTRY/testing:latest"
+          elif [[ "${{ matrix.source }}" == 'upstream' ]]; then
+            # Assume some contents changed, always push latest upstream.
+            FQIN="$REPONAME_QUAY_REGISTRY/upstream:latest"
+          else
+            echo "::error::Unknown matrix item '${{ matrix.source }}'"
+            exit 1
+          fi
+          echo "::warning::Pushing $FQIN"
+          echo "::set-output name=fqin::${FQIN}"
+          echo '::set-output name=push::true'
+
+      # This is substantially similar to the above logic,
+      # but only handles $CONTAINERS_QUAY_REGISTRY for
+      # the stable "latest" and named-version tagged images.
+      - name: Generate containers reg. image FQIN(s)
+        if: matrix.source == 'stable'
+        id: containers_reg
+        run: |
+          VERSION='v${{ steps.sniff_test.outputs.version }}'
+          # workaround vim syntax-highlight bug: '
+          # Push both new|updated version-tag and latest-tag FQINs
+          FQIN="$CONTAINERS_QUAY_REGISTRY/$REPONAME:$VERSION,$CONTAINERS_QUAY_REGISTRY/$REPONAME:latest"
+          echo "::warning::Pushing $FQIN"
+          echo "::set-output name=fqin::${FQIN}"
+          echo '::set-output name=push::true'
+
+      - name: Define LABELS multi-line env. var. value
+        run: |
+          # This is a really hacky/strange workflow idiom, required
+          # for setting multi-line $LABELS value for consumption in
+          # a future step.  There is literally no cleaner way to do this :<
+          # https://docs.github.com/en/actions/reference/workflow-commands-for-github-actions#multiline-strings
+          function set_labels() {
+            echo 'LABELS<<DELIMITER' >> "$GITHUB_ENV"
+            for line; do
+                echo "$line" | tee -a "$GITHUB_ENV"
+            done
+            echo "DELIMITER" >> "$GITHUB_ENV"
+          }
+
+          declare -a lines
+          lines=(\
+            "org.opencontainers.image.source=https://github.com/${GITHUB_REPOSITORY}.git"
+            "org.opencontainers.image.revision=${GITHUB_SHA}"
+            "org.opencontainers.image.created=$(date -u --iso-8601=seconds)"
+          )
+
+          # Only the 'stable' matrix source obtains $VERSION
+          if [[ "${{ matrix.source }}" == "stable" ]]; then
+            lines+=(\
+              "org.opencontainers.image.version=${{ steps.sniff_test.outputs.version }}"
+            )
+          fi
+
+          set_labels "${lines[@]}"
+
+      # Separate steps to login and push for $REPONAME_QUAY_REGISTRY and
+      # $CONTAINERS_QUAY_REGISTRY are required, because 2 sets of credentials
+      # are used and namespaced within the registry.  At the same time, reuse
+      # of non-shell steps is not supported by Github Actions nor are YAML
+      # anchors/aliases, nor composite actions.
+
+      # Push to $REPONAME_QUAY_REGISTRY for stable, testing. and upstream
+      - name: Login to ${{ env.REPONAME_QUAY_REGISTRY }}
+        uses: docker/login-action@v1
+        if: steps.reponame_reg.outputs.push == 'true'
+        with:
+          registry: ${{ env.REPONAME_QUAY_REGISTRY }}
+          # N/B: Secrets are not passed to workflows that are triggered
+          #      by a pull request from a fork
+          username: ${{ secrets.REPONAME_QUAY_USERNAME }}
+          password: ${{ secrets.REPONAME_QUAY_PASSWORD }}
+
+      - name: Push images to ${{ steps.reponame_reg.outputs.fqin }}
+        uses: docker/build-push-action@v2
+        if: steps.reponame_reg.outputs.push == 'true'
+        with:
+          cache-from: type=registry,ref=localhost:5000/${{ env.REPONAME }}/${{ matrix.source }}
+          cache-to: type=inline
+          context: contrib/${{ env.REPONAME }}image/${{ matrix.source }}
+          file: ./contrib/${{ env.REPONAME }}image/${{ matrix.source }}/Dockerfile
+          platforms: ${{ env.PLATFORMS }}
+          push: true
+          tags: ${{ steps.reponame_reg.outputs.fqin }}
+          labels: |
+            ${{ env.LABELS }}
+
+      # Push to $CONTAINERS_QUAY_REGISTRY only stable
+      - name: Login to ${{ env.CONTAINERS_QUAY_REGISTRY }}
+        if: steps.containers_reg.outputs.push == 'true'
+        uses: docker/login-action@v1
+        with:
+          registry: ${{ env.CONTAINERS_QUAY_REGISTRY}}
+          username: ${{ secrets.CONTAINERS_QUAY_USERNAME }}
+          password: ${{ secrets.CONTAINERS_QUAY_PASSWORD }}
+
+      - name: Push images to ${{ steps.containers_reg.outputs.fqin }}
+        if: steps.containers_reg.outputs.push == 'true'
+        uses: docker/build-push-action@v2
+        with:
+          cache-from: type=registry,ref=localhost:5000/${{ env.REPONAME }}/${{ matrix.source }}
+          cache-to: type=inline
+          context: contrib/${{ env.REPONAME }}image/${{ matrix.source }}
+          file: ./contrib/${{ env.REPONAME }}image/${{ matrix.source }}/Dockerfile
+          platforms: ${{ env.PLATFORMS }}
+          push: true
+          tags: ${{ steps.containers_reg.outputs.fqin }}
+          labels: |
+            ${{ env.LABELS }}

.github/workflows/rerun_cirrus_cron.yml

@@ -1,19 +0,0 @@
----
-
-# See also: https://github.com/containers/podman/blob/main/.github/workflows/rerun_cirrus_cron.yml
-
-on:
-  # Note: This only applies to the default branch.
-  schedule:
-    # N/B: This should correspond to a period slightly after
-    # the last job finishes running.  See job defs. at:
-    # https://cirrus-ci.com/settings/repository/6706677464432640
-    - cron:  '01 01 * * 1-5'
-  # Debug: Allow triggering job manually in github-actions WebUI
-  workflow_dispatch: {}
-
-jobs:
-  # Ref: https://docs.github.com/en/actions/using-workflows/reusing-workflows
-  call_cron_rerun:
-    uses: containers/podman/.github/workflows/rerun_cirrus_cron.yml@main
-    secrets: inherit

.github/workflows/stale.yml

@@ -7,17 +7,13 @@ on:
   schedule:
   - cron: "0 0 * * *"
 
-permissions:
-  contents: read
-
 jobs:
   stale:
-    permissions:
-      issues: write  # for actions/stale to close stale issues
-      pull-requests: write  # for actions/stale to close stale PRs
+
     runs-on: ubuntu-latest
+
     steps:
-    - uses: actions/stale@v9
+    - uses: actions/stale@v1
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         stale-issue-message: 'A friendly reminder that this issue had no activity for 30 days.'

.gitignore

@@ -2,7 +2,7 @@
 /layers-*
 /skopeo
 result
-/completions/
+
 # ignore JetBrains IDEs (GoLand) config folder
 .idea
 

.golangci.yml

@@ -1,3 +0,0 @@
----
-run:
-  timeout: 5m

.packit.yaml

@@ -1,117 +0,0 @@
----
-# See the documentation for more information:
-# https://packit.dev/docs/configuration/
-
-# NOTE: The Packit copr_build tasks help to check if every commit builds on
-# supported Fedora and CentOS Stream arches.
-# They do not block the current Cirrus-based workflow.
-
-downstream_package_name: skopeo
-upstream_tag_template: v{version}
-
-packages:
-  skopeo-fedora:
-    pkg_tool: fedpkg
-    specfile_path: rpm/skopeo.spec
-  skopeo-centos:
-    pkg_tool: centpkg
-    specfile_path: rpm/skopeo.spec
-  skopeo-rhel:
-    specfile_path: rpm/skopeo.spec
-  skopeo-eln:
-    specfile_path: rpm/skopeo.spec
-
-srpm_build_deps:
-  - make
-
-jobs:
-  - job: copr_build
-    trigger: pull_request
-    packages: [skopeo-fedora]
-    notifications: &copr_build_failure_notification
-      failure_comment:
-        message: "Ephemeral COPR build failed. @containers/packit-build please check."
-    targets:
-      - fedora-development-x86_64
-      - fedora-development-aarch64
-      - fedora-latest-x86_64
-      - fedora-latest-aarch64
-      - fedora-latest-stable-x86_64
-      - fedora-latest-stable-aarch64
-      - fedora-40-x86_64
-      - fedora-40-aarch64
-    enable_net: true
-
-  - job: copr_build
-    trigger: pull_request
-    packages: [skopeo-eln]
-    notifications: *copr_build_failure_notification
-    targets:
-      fedora-eln-x86_64:
-        additional_repos:
-          - "https://kojipkgs.fedoraproject.org/repos/eln-build/latest/x86_64/"
-      fedora-eln-aarch64:
-        additional_repos:
-          - "https://kojipkgs.fedoraproject.org/repos/eln-build/latest/aarch64/"
-    enable_net: true
-
-  - job: copr_build
-    trigger: pull_request
-    packages: [skopeo-centos]
-    notifications: *copr_build_failure_notification
-    targets:
-      - centos-stream-9-x86_64
-      - centos-stream-9-aarch64
-      - centos-stream-10-x86_64
-      - centos-stream-10-aarch64
-    enable_net: true
-
-  # Disabled until there is go 1.22 in epel-9
-  # - job: copr_build
-  #   trigger: pull_request
-  #   packages: [skopeo-rhel]
-  #   notifications: *copr_build_failure_notification
-  #   targets:
-  #     - epel-9-x86_64
-  #     - epel-9-aarch64
-  #   enable_net: true
-
-  # Run on commit to main branch
-  - job: copr_build
-    trigger: commit
-    packages: [skopeo-fedora]
-    notifications:
-      failure_comment:
-        message: "podman-next COPR build failed. @containers/packit-build please check."
-    branch: main
-    owner: rhcontainerbot
-    project: podman-next
-    enable_net: true
-
-  # Sync to Fedora
-  - job: propose_downstream
-    trigger: release
-    packages: [skopeo-fedora]
-    update_release: false
-    dist_git_branches: &fedora_targets
-      - fedora-all
-
-  # Sync to CentOS Stream
-  - job: propose_downstream
-    trigger: release
-    packages: [skopeo-centos]
-    update_release: false
-    dist_git_branches:
-      - c10s
-
-  # Fedora Koji build
-  - job: koji_build
-    trigger: commit
-    packages: [skopeo-fedora]
-    sidetag_group: podman-releases
-    # Dependents are not rpm dependencies, but the package whose bodhi update
-    # should include this package.
-    # Ref: https://packit.dev/docs/fedora-releases-guide/releasing-multiple-packages
-    dependents:
-      - podman
-    dist_git_branches: *fedora_targets

CONTRIBUTING.md

@@ -149,7 +149,7 @@ When new PRs for [containers/image](https://github.com/containers/image) break `
 ## Communications
 
 For general questions, or discussions, please use the 
-IRC channel on `irc.libera.chat` called `#container-projects`
+IRC group on `irc.freenode.net` called `container-projects`
 that has been setup.
 
 For discussions around issues/bugs and features, you can use the github

Makefile

@@ -2,46 +2,44 @@
 
 export GOPROXY=https://proxy.golang.org
 
+# On some platforms (eg. macOS, FreeBSD) gpgme is installed in /usr/local/ but /usr/local/include/ is
+# not in the default search path. Rather than hard-code this directory, use gpgme-config.
+# Sadly that must be done at the top-level user instead of locally in the gpgme subpackage, because cgo
+# supports only pkg-config, not general shell scripts, and gpgme does not install a pkg-config file.
+# If gpgme is not installed or gpgme-config can’t be found for other reasons, the error is silently ignored
+# (and the user will probably find out because the cgo compilation will fail).
+GPGME_ENV := CGO_CFLAGS="$(shell gpgme-config --cflags 2>/dev/null)" CGO_LDFLAGS="$(shell gpgme-config --libs 2>/dev/null)"
+
 # The following variables very roughly follow https://www.gnu.org/prep/standards/standards.html#Makefile-Conventions .
 DESTDIR ?=
 PREFIX ?= /usr/local
-ifeq ($(shell uname -s),FreeBSD)
-CONTAINERSCONFDIR ?= /usr/local/etc/containers
-else
 CONTAINERSCONFDIR ?= /etc/containers
-endif
 REGISTRIESDDIR ?= ${CONTAINERSCONFDIR}/registries.d
-LOOKASIDEDIR ?= /var/lib/containers/sigstore
+SIGSTOREDIR ?= /var/lib/containers/sigstore
 BINDIR ?= ${PREFIX}/bin
 MANDIR ?= ${PREFIX}/share/man
-
-BASHINSTALLDIR=${PREFIX}/share/bash-completion/completions
-ZSHINSTALLDIR=${PREFIX}/share/zsh/site-functions
-FISHINSTALLDIR=${PREFIX}/share/fish/vendor_completions.d
+BASHCOMPLETIONSDIR ?= ${PREFIX}/share/bash-completion/completions
 
 GO ?= go
 GOBIN := $(shell $(GO) env GOBIN)
 GOOS ?= $(shell go env GOOS)
 GOARCH ?= $(shell go env GOARCH)
 
-# N/B: This value is managed by Renovate, manual changes are
-# possible, as long as they don't disturb the formatting
-# (i.e. DO NOT ADD A 'v' prefix!)
-GOLANGCI_LINT_VERSION := 1.61.0
-
 ifeq ($(GOBIN),)
 GOBIN := $(GOPATH)/bin
 endif
 
-# Scripts may also use CONTAINER_RUNTIME, so we need to export it.
-# Note possibly non-obvious aspects of this:
-# - We need to use 'command -v' here, not 'which', for compatibility with MacOS.
-# - GNU Make 4.2.1 (included in Ubuntu 20.04) incorrectly tries to avoid invoking
-#   a shell, and fails because there is no /usr/bin/command. The trailing ';' in
-#   $(shell … ;) defeats that heuristic (recommended in
-#   https://savannah.gnu.org/bugs/index.php?57625 ).
-export CONTAINER_RUNTIME ?= $(if $(shell command -v podman ;),podman,docker)
-GOMD2MAN ?= $(if $(shell command -v go-md2man ;),go-md2man,$(GOBIN)/go-md2man)
+# Multiple scripts are sensitive to this value, make sure it's exported/available
+# N/B: Need to use 'command -v' here for compatibility with MacOS.
+export CONTAINER_RUNTIME ?= $(if $(shell command -v podman),podman,docker)
+GOMD2MAN ?= $(if $(shell command -v go-md2man),go-md2man,$(GOBIN)/go-md2man)
+
+# Go module support: set `-mod=vendor` to use the vendored sources.
+# See also hack/make.sh.
+ifeq ($(shell go help mod >/dev/null 2>&1 && echo true), true)
+  GO:=GO111MODULE=on $(GO)
+  MOD_VENDOR=-mod=vendor
+endif
 
 ifeq ($(DEBUG), 1)
   override GOGCFLAGS += -N -l
@@ -53,12 +51,20 @@ ifeq ($(GOOS), linux)
   endif
 endif
 
+GIT_BRANCH := $(shell git rev-parse --abbrev-ref HEAD 2>/dev/null)
+
 # If $TESTFLAGS is set, it is passed as extra arguments to 'go test'.
-# You can select certain tests to run, with `-run <regex>` for example:
+# You can increase test output verbosity with the option '-test.vv'.
+# You can select certain tests to run, with `-test.run <regex>` for example:
 #
-#     make test-unit TESTFLAGS='-run ^TestManifestDigest$'
-#     make test-integration TESTFLAGS='-run copySuite.TestCopy.*'
-export TESTFLAGS ?= -timeout=15m
+#     make test-unit TESTFLAGS='-test.run ^TestManifestDigest$'
+#
+# For integration test, we use [gocheck](https://labix.org/gocheck).
+# You can increase test output verbosity with the option '-check.vv'.
+# You can limit test selection with `-check.f <regex>`, for example:
+#
+#     make test-integration TESTFLAGS='-check.f CopySuite.TestCopy.*'
+export TESTFLAGS ?= -v -check.v -test.timeout=15m
 
 # This is assumed to be set non-empty when operating inside a CI/automation environment
 CI ?=
@@ -82,7 +88,7 @@ endif
 CONTAINER_GOSRC = /src/github.com/containers/skopeo
 CONTAINER_RUN ?= $(CONTAINER_CMD) --security-opt label=disable -v $(CURDIR):$(CONTAINER_GOSRC) -w $(CONTAINER_GOSRC) $(SKOPEO_CIDEV_CONTAINER_FQIN)
 
-GIT_COMMIT := $(shell GIT_CEILING_DIRECTORIES=$$(cd ..; pwd) git rev-parse HEAD 2> /dev/null || true)
+GIT_COMMIT := $(shell git rev-parse HEAD 2> /dev/null || true)
 
 EXTRA_LDFLAGS ?=
 SKOPEO_LDFLAGS := -ldflags '-X main.gitCommit=${GIT_COMMIT} $(EXTRA_LDFLAGS)'
@@ -91,12 +97,13 @@ MANPAGES_MD = $(wildcard docs/*.md)
 MANPAGES ?= $(MANPAGES_MD:%.md=%)
 
 BTRFS_BUILD_TAG = $(shell hack/btrfs_tag.sh) $(shell hack/btrfs_installed_tag.sh)
+LIBDM_BUILD_TAG = $(shell hack/libdm_tag.sh)
 LIBSUBID_BUILD_TAG = $(shell hack/libsubid_tag.sh)
-LOCAL_BUILD_TAGS = $(BTRFS_BUILD_TAG) $(LIBSUBID_BUILD_TAG)
+LOCAL_BUILD_TAGS = $(BTRFS_BUILD_TAG) $(LIBDM_BUILD_TAG) $(LIBSUBID_BUILD_TAG)
 BUILDTAGS += $(LOCAL_BUILD_TAGS)
 
 ifeq ($(DISABLE_CGO), 1)
-	override BUILDTAGS = exclude_graphdriver_btrfs containers_image_openpgp
+	override BUILDTAGS = exclude_graphdriver_devicemapper exclude_graphdriver_btrfs containers_image_openpgp
 endif
 
 #   make all DEBUG=1
@@ -116,7 +123,6 @@ help:
 	@echo " * 'install' - Install binaries and documents to system locations"
 	@echo " * 'binary' - Build skopeo with a container"
 	@echo " * 'bin/skopeo' - Build skopeo locally"
-	@echo " * 'bin/skopeo.OS.ARCH' - Build skopeo for specific OS and ARCH"
 	@echo " * 'test-unit' - Execute unit tests"
 	@echo " * 'test-integration' - Execute integration tests"
 	@echo " * 'validate' - Verify whether there is no conflict and all Go source files have been formatted, linted and vetted"
@@ -131,9 +137,9 @@ binary: cmd/skopeo
 # Build w/o using containers
 .PHONY: bin/skopeo
 bin/skopeo:
-	$(GO) build ${GO_DYN_FLAGS} ${SKOPEO_LDFLAGS} -gcflags "$(GOGCFLAGS)" -tags "$(BUILDTAGS)" -o $@ ./cmd/skopeo
+	$(GPGME_ENV) $(GO) build $(MOD_VENDOR) ${GO_DYN_FLAGS} ${SKOPEO_LDFLAGS} -gcflags "$(GOGCFLAGS)" -tags "$(BUILDTAGS)" -o $@ ./cmd/skopeo
 bin/skopeo.%:
-	GOOS=$(word 2,$(subst ., ,$@)) GOARCH=$(word 3,$(subst ., ,$@)) $(GO) build ${SKOPEO_LDFLAGS} -tags "containers_image_openpgp $(BUILDTAGS)" -o $@ ./cmd/skopeo
+	GOOS=$(word 2,$(subst ., ,$@)) GOARCH=$(word 3,$(subst ., ,$@)) $(GO) build $(MOD_VENDOR) ${SKOPEO_LDFLAGS} -tags "containers_image_openpgp $(BUILDTAGS)" -o $@ ./cmd/skopeo
 local-cross: bin/skopeo.darwin.amd64 bin/skopeo.linux.arm bin/skopeo.linux.arm64 bin/skopeo.windows.386.exe bin/skopeo.windows.amd64.exe
 
 $(MANPAGES): %: %.md
@@ -146,19 +152,11 @@ docs: $(MANPAGES)
 docs-in-container:
 	${CONTAINER_RUN} $(MAKE) docs $(if $(DEBUG),DEBUG=$(DEBUG))
 
-.PHONY: completions
-completions: bin/skopeo
-	install -d -m 755 completions/bash completions/zsh completions/fish completions/powershell
-	./bin/skopeo completion bash >| completions/bash/skopeo
-	./bin/skopeo completion zsh >| completions/zsh/_skopeo
-	./bin/skopeo completion fish >| completions/fish/skopeo.fish
-	./bin/skopeo completion powershell >| completions/powershell/skopeo.ps1
-
 clean:
-	rm -rf bin docs/*.1 completions/
+	rm -rf bin docs/*.1
 
 install: install-binary install-docs install-completions
-	install -d -m 755 ${DESTDIR}${LOOKASIDEDIR}
+	install -d -m 755 ${DESTDIR}${SIGSTOREDIR}
 	install -d -m 755 ${DESTDIR}${CONTAINERSCONFDIR}
 	install -m 644 default-policy.json ${DESTDIR}${CONTAINERSCONFDIR}/policy.json
 	install -d -m 755 ${DESTDIR}${REGISTRIESDDIR}
@@ -174,39 +172,25 @@ ifneq ($(DISABLE_DOCS), 1)
 	install -m 644 docs/*.1 ${DESTDIR}${MANDIR}/man1
 endif
 
-install-completions: completions
-	install -d -m 755 ${DESTDIR}${BASHINSTALLDIR}
-	install -m 644 completions/bash/skopeo ${DESTDIR}${BASHINSTALLDIR}
-	install -d -m 755 ${DESTDIR}${ZSHINSTALLDIR}
-	install -m 644 completions/zsh/_skopeo ${DESTDIR}${ZSHINSTALLDIR}
-	install -d -m 755 ${DESTDIR}${FISHINSTALLDIR}
-	install -m 644 completions/fish/skopeo.fish ${DESTDIR}${FISHINSTALLDIR}
-	# There is no common location for powershell files so do not install them. Users have to source the file from their powershell profile.
+install-completions:
+	install -m 755 -d ${DESTDIR}${BASHCOMPLETIONSDIR}
+	install -m 644 completions/bash/skopeo ${DESTDIR}${BASHCOMPLETIONSDIR}/skopeo
 
 shell:
 	$(CONTAINER_RUN) bash
 
-tools:
-	if [ ! -x "$(GOBIN)/golangci-lint" ]; then \
-		curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(GOBIN) v$(GOLANGCI_LINT_VERSION) ; \
-	fi
-
 check: validate test-unit test-integration test-system
 
 test-integration:
-# This is intended to be equal to $(CONTAINER_RUN), but with --cap-add=cap_mknod.
-# --cap-add=cap_mknod is important to allow skopeo to use containers-storage: directly as it exists in the callers’ environment, without
-# creating a nested user namespace (which requires /etc/subuid and /etc/subgid to be set up)
-	$(CONTAINER_CMD) --security-opt label=disable --cap-add=cap_mknod -v $(CURDIR):$(CONTAINER_GOSRC) -w $(CONTAINER_GOSRC) $(SKOPEO_CIDEV_CONTAINER_FQIN) \
-		$(MAKE) test-integration-local
+	$(CONTAINER_RUN) $(MAKE) test-integration-local
 
 
 # Intended for CI, assumed to be running in quay.io/libpod/skopeo_cidev container.
 test-integration-local: bin/skopeo
-	hack/warn-destructive-tests.sh
-	hack/test-integration.sh
+	hack/make.sh test-integration
 
 # complicated set of options needed to run podman-in-podman
+# TODO: The $(RM) command will likely fail w/o `podman unshare`
 test-system:
 	DTEMP=$(shell mktemp -d --tmpdir=/var/tmp podman-tmp.XXXXXX); \
 	$(CONTAINER_CMD) --privileged \
@@ -215,13 +199,12 @@ test-system:
 		"$(SKOPEO_CIDEV_CONTAINER_FQIN)" \
 			$(MAKE) test-system-local; \
 	rc=$$?; \
-	$(CONTAINER_RUNTIME) unshare rm -rf $$DTEMP; # This probably doesn't work with Docker, oh well, better than nothing... \
+	-$(RM) -rf $$DTEMP; \
 	exit $$rc
 
 # Intended for CI, assumed to already be running in quay.io/libpod/skopeo_cidev container.
 test-system-local: bin/skopeo
-	hack/warn-destructive-tests.sh
-	hack/test-system.sh
+	hack/make.sh test-system
 
 test-unit:
 	# Just call (make test unit-local) here instead of worrying about environment differences
@@ -235,19 +218,16 @@ test-all-local: validate-local validate-docs test-unit-local
 
 .PHONY: validate-local
 validate-local:
-	hack/validate-git-marks.sh
-	hack/validate-gofmt.sh
-	GOBIN=$(GOBIN) hack/validate-lint.sh
-	BUILDTAGS="${BUILDTAGS}" hack/validate-vet.sh
+	BUILDTAGS="${BUILDTAGS}" hack/make.sh validate-git-marks validate-gofmt validate-lint validate-vet
 
 # This invokes bin/skopeo, hence cannot be run as part of validate-local
 .PHONY: validate-docs
-validate-docs: bin/skopeo
+validate-docs:
 	hack/man-page-checker
 	hack/xref-helpmsgs-manpages
 
-test-unit-local:
-	$(GO) test -tags "$(BUILDTAGS)" $$($(GO) list -tags "$(BUILDTAGS)" -e ./... | grep -v '^github\.com/containers/skopeo/\(integration\|vendor/.*\)$$')
+test-unit-local: bin/skopeo
+	$(GPGME_ENV) $(GO) test $(MOD_VENDOR) -tags "$(BUILDTAGS)" $$($(GO) list $(MOD_VENDOR) -tags "$(BUILDTAGS)" -e ./... | grep -v '^github\.com/containers/skopeo/\(integration\|vendor/.*\)$$')
 
 vendor:
 	$(GO) mod tidy
@@ -255,9 +235,4 @@ vendor:
 	$(GO) mod verify
 
 vendor-in-container:
-	podman run --privileged --rm --env HOME=/root -v $(CURDIR):/src -w /src golang $(MAKE) vendor
-
-# CAUTION: This is not a replacement for RPMs provided by your distro.
-# Only intended to build and test the latest unreleased changes.
-rpm:
-	rpkg local
+	podman run --privileged --rm --env HOME=/root -v $(CURDIR):/src -w /src quay.io/libpod/golang:1.16 $(MAKE) vendor

README.md

@@ -1,6 +1,7 @@
-<p align="center">
-   <img src="https://cdn.rawgit.com/containers/skopeo/main/docs/skopeo.svg" width="250" alt="Skopeo">
-</p>
+skopeo [![Build Status](https://travis-ci.org/containers/skopeo.svg?branch=master)](https://travis-ci.org/containers/skopeo)
+=
+
+<img src="https://cdn.rawgit.com/containers/skopeo/master/docs/skopeo.svg" width="250">
 
 ----
 
@@ -41,14 +42,6 @@ Skopeo works with API V2 container image registries such as [docker.io](https://
  * oci:path:tag
          An image tag in a directory compliant with "Open Container Image Layout Specification" at path.
 
-[Obtaining skopeo](./install.md)
--
-
-For a detailed description how to install or build skopeo, see
-[install.md](./install.md).
-
-Skopeo is also available as a Container Image on [quay.io](https://quay.io/skopeo/stable).  For more information, see the [Skopeo Image](https://github.com/containers/image_build/blob/main/skopeo/README.md) page.
-
 ## Inspecting a repository
 `skopeo` is able to _inspect_ a repository on a container registry and fetch images layers.
 The _inspect_ command fetches the repository's manifest and it is able to show you a `docker inspect`-like
@@ -63,37 +56,29 @@ Examples:
 $ skopeo inspect docker://registry.fedoraproject.org/fedora:latest
 {
     "Name": "registry.fedoraproject.org/fedora",
-    "Digest": "sha256:0f65bee641e821f8118acafb44c2f8fe30c2fc6b9a2b3729c0660376391aa117",
+    "Digest": "sha256:655721ff613ee766a4126cb5e0d5ae81598e1b0c3bcf7017c36c4d72cb092fe9",
     "RepoTags": [
-        "34-aarch64",
-        "34",
-        "latest",
-        ...
+        "24",
+        "25",
+        "26-modular",
+	...
     ],
-    "Created": "2022-11-24T13:54:18Z",
+    "Created": "2020-04-29T06:48:16Z",
     "DockerVersion": "1.10.1",
     "Labels": {
         "license": "MIT",
         "name": "fedora",
         "vendor": "Fedora Project",
-        "version": "37"
+        "version": "32"
     },
     "Architecture": "amd64",
     "Os": "linux",
     "Layers": [
-        "sha256:2a0fc6bf62e155737f0ace6142ee686f3c471c1aab4241dc3128904db46288f0"
-    ],
-    "LayersData": [
-        {
-            "MIMEType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
-            "Digest": "sha256:2a0fc6bf62e155737f0ace6142ee686f3c471c1aab4241dc3128904db46288f0",
-            "Size": 71355009,
-            "Annotations": null
-        }
+        "sha256:3088721d7dbf674fc0be64cd3cf00c25aab921cacf35fa0e7b1578500a3e1653"
     ],
     "Env": [
-        "DISTTAG=f37container",
-        "FGC=f37",
+        "DISTTAG=f32container",
+        "FGC=f32",
         "container=oci"
     ]
 }
@@ -199,6 +184,12 @@ $ skopeo inspect --creds=testuser:testpassword docker://myregistrydomain.com:500
 $ skopeo copy --src-creds=testuser:testpassword docker://myregistrydomain.com:5000/private oci:local_oci_image
 ```
 
+[Obtaining skopeo](./install.md)
+-
+
+For a detailed description how to install or build skopeo, see
+[install.md](./install.md).
+
 Contributing
 -
 
@@ -209,15 +200,14 @@ Please read the [contribution guide](CONTRIBUTING.md) if you want to collaborate
 | -------------------------------------------------- | ---------------------------------------------------------------------------------------------|
 | [skopeo-copy(1)](/docs/skopeo-copy.1.md)           | Copy an image (manifest, filesystem layers, signatures) from one location to another.        |
 | [skopeo-delete(1)](/docs/skopeo-delete.1.md)       | Mark the image-name for later deletion by the registry's garbage collector.                                                                |
-| [skopeo-generate-sigstore-key(1)](/docs/skopeo-generate-sigstore-key.1.md)    | Generate a sigstore public/private key pair.  |
 | [skopeo-inspect(1)](/docs/skopeo-inspect.1.md)     | Return  low-level  information about image-name in a registry.                                |
 | [skopeo-list-tags(1)](/docs/skopeo-list-tags.1.md) | Return a list of tags for the transport-specific image repository.                               |
 | [skopeo-login(1)](/docs/skopeo-login.1.md)         | Login to a container registry.                                                               |
 | [skopeo-logout(1)](/docs/skopeo-logout.1.md)       | Logout of a container registry.                                                              |
 | [skopeo-manifest-digest(1)](/docs/skopeo-manifest-digest.1.md)    | Compute a manifest digest for a manifest-file and write it to standard output.   |
-| [skopeo-standalone-sign(1)](/docs/skopeo-standalone-sign.1.md)    | Debugging tool - Sign an image locally without uploading.                     |
-| [skopeo-standalone-verify(1)](/docs/skopeo-standalone-verify.1.md)| Debugging tool - Verify an image signature from local files.                  |
-| [skopeo-sync(1)](/docs/skopeo-sync.1.md)           | Synchronize images between registry repositories and local directories.                      |
+| [skopeo-standalone-sign(1)](/docs/skopeo-standalone-sign.1.md)    | Debugging tool - Publish and sign an image in one step.                                                         |
+| [skopeo-standalone-verify(1)](/docs/skopeo-standalone-verify.1.md)| Verify an image signature.                                                    |
+| [skopeo-sync(1)](/docs/skopeo-sync.1.md)           | Synchronize images between container registries and local directories.                       |
 
 License
 -

cmd/skopeo/cgo_pthread_ordering_workaround.go

@@ -0,0 +1,35 @@
+//go:build !containers_image_openpgp
+// +build !containers_image_openpgp
+
+package main
+
+/*
+This is a pretty horrible workaround.  Due to a glibc bug
+https://bugzilla.redhat.com/show_bug.cgi?id=1326903 , we must ensure we link
+with -lgpgme before -lpthread.  Such arguments come from various packages
+using cgo, and the ordering of these arguments is, with current (go tool link),
+dependent on the order in which the cgo-using packages are found in a
+breadth-first search following dependencies, starting from “main”.
+
+Thus, if
+   import "net"
+is processed before
+   import "…/skopeo/signature"
+it will, in the next level of the BFS, pull in "runtime/cgo" (a dependency of
+"net") before "mtrmac/gpgme" (a dependency of "…/skopeo/signature"), causing
+-lpthread (used by "runtime/cgo") to be used before -lgpgme.
+
+This might be possible to work around by careful import ordering, or by removing
+a direct dependency on "net", but that would be very fragile.
+
+So, until the above bug is fixed, add -lgpgme directly in the "main" package
+to ensure the needed build order.
+
+Unfortunately, this workaround needs to be applied at the top level of any user
+of "…/skopeo/signature"; it cannot be added to "…/skopeo/signature" itself,
+by that time this package is first processed by the linker, a -lpthread may
+already be queued and it would be too late.
+*/
+
+// #cgo LDFLAGS: -lgpgme
+import "C"

cmd/skopeo/completions.go

@@ -1,22 +0,0 @@
-package main
-
-import (
-	"github.com/containers/image/v5/tarball"
-	"github.com/containers/image/v5/transports"
-	"github.com/spf13/cobra"
-)
-
-// autocompleteSupportedTransports list all supported transports with the colon suffix.
-func autocompleteSupportedTransports(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
-	tps := transports.ListNames()
-	suggestions := make([]string, 0, len(tps))
-	for _, tp := range tps {
-		// ListNames is generally expected to filter out deprecated transports.
-		// tarball: is not deprecated, but it is only usable from a Go caller (using tarball.ConfigUpdater),
-		// so don’t offer it on the CLI.
-		if tp != tarball.Transport.Name() {
-			suggestions = append(suggestions, tp+":")
-		}
-	}
-	return suggestions, cobra.ShellCompDirectiveNoFileComp
-}

cmd/skopeo/copy.go

@@ -4,7 +4,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"os"
+	"io/ioutil"
 	"strings"
 
 	commonFlag "github.com/containers/common/pkg/flag"
@@ -13,8 +13,6 @@ import (
 	"github.com/containers/image/v5/docker/reference"
 	"github.com/containers/image/v5/manifest"
 	"github.com/containers/image/v5/pkg/cli"
-	"github.com/containers/image/v5/pkg/cli/sigstore"
-	"github.com/containers/image/v5/signature/signer"
 	"github.com/containers/image/v5/transports"
 	"github.com/containers/image/v5/transports/alltransports"
 	encconfig "github.com/containers/ocicrypt/config"
@@ -23,28 +21,24 @@ import (
 )
 
 type copyOptions struct {
-	global                   *globalOptions
-	deprecatedTLSVerify      *deprecatedTLSVerifyOption
-	srcImage                 *imageOptions
-	destImage                *imageDestOptions
-	retryOpts                *retry.Options
-	additionalTags           []string                  // For docker-archive: destinations, in addition to the name:tag specified as destination, also add these
-	removeSignatures         bool                      // Do not copy signatures from the source image
-	signByFingerprint        string                    // Sign the image using a GPG key with the specified fingerprint
-	signBySigstoreParamFile  string                    // Sign the image using a sigstore signature per configuration in a param file
-	signBySigstorePrivateKey string                    // Sign the image using a sigstore private key
-	signPassphraseFile       string                    // Path pointing to a passphrase file when signing (for either signature format, but only one of them)
-	signIdentity             string                    // Identity of the signed image, must be a fully specified docker reference
-	digestFile               string                    // Write digest to this file
-	format                   commonFlag.OptionalString // Force conversion of the image to a specified format
-	quiet                    bool                      // Suppress output information when copying images
-	all                      bool                      // Copy all of the images if the source is a list
-	multiArch                commonFlag.OptionalString // How to handle multi architecture images
-	preserveDigests          bool                      // Preserve digests during copy
-	encryptLayer             []int                     // The list of layers to encrypt
-	encryptionKeys           []string                  // Keys needed to encrypt the image
-	decryptionKeys           []string                  // Keys needed to decrypt the image
-	imageParallelCopies      uint                      // Maximum number of parallel requests when copying images
+	global              *globalOptions
+	deprecatedTLSVerify *deprecatedTLSVerifyOption
+	srcImage            *imageOptions
+	destImage           *imageDestOptions
+	retryOpts           *retry.RetryOptions
+	additionalTags      []string                  // For docker-archive: destinations, in addition to the name:tag specified as destination, also add these
+	removeSignatures    bool                      // Do not copy signatures from the source image
+	signByFingerprint   string                    // Sign the image using a GPG key with the specified fingerprint
+	signPassphraseFile  string                    // Path pointing to a passphrase file when signing
+	digestFile          string                    // Write digest to this file
+	format              commonFlag.OptionalString // Force conversion of the image to a specified format
+	quiet               bool                      // Suppress output information when copying images
+	all                 bool                      // Copy all of the images if the source is a list
+	multiArch           commonFlag.OptionalString // How to handle multi architecture images
+	preserveDigests     bool                      // Preserve digests during copy
+	encryptLayer        []int                     // The list of layers to encrypt
+	encryptionKeys      []string                  // Keys needed to encrypt the image
+	decryptionKeys      []string                  // Keys needed to decrypt the image
 }
 
 func copyCmd(global *globalOptions) *cobra.Command {
@@ -69,9 +63,8 @@ Supported transports:
 
 See skopeo(1) section "IMAGE NAMES" for the expected format
 `, strings.Join(transports.ListNames(), ", ")),
-		RunE:              commandAction(opts.run),
-		Example:           `skopeo copy docker://quay.io/skopeo/stable:latest docker://registry.example.com/skopeo:latest`,
-		ValidArgsFunction: autocompleteSupportedTransports,
+		RunE:    commandAction(opts.run),
+		Example: `skopeo copy docker://quay.io/skopeo/stable:latest docker://registry.example.com/skopeo:latest`,
 	}
 	adjustUsage(cmd)
 	flags := cmd.Flags()
@@ -87,16 +80,12 @@ See skopeo(1) section "IMAGE NAMES" for the expected format
 	flags.BoolVar(&opts.preserveDigests, "preserve-digests", false, "Preserve digests of images and lists")
 	flags.BoolVar(&opts.removeSignatures, "remove-signatures", false, "Do not copy signatures from SOURCE-IMAGE")
 	flags.StringVar(&opts.signByFingerprint, "sign-by", "", "Sign the image using a GPG key with the specified `FINGERPRINT`")
-	flags.StringVar(&opts.signBySigstoreParamFile, "sign-by-sigstore", "", "Sign the image using a sigstore parameter file at `PATH`")
-	flags.StringVar(&opts.signBySigstorePrivateKey, "sign-by-sigstore-private-key", "", "Sign the image using a sigstore private key at `PATH`")
-	flags.StringVar(&opts.signPassphraseFile, "sign-passphrase-file", "", "Read a passphrase for signing an image from `PATH`")
-	flags.StringVar(&opts.signIdentity, "sign-identity", "", "Identity of signed image, must be a fully specified docker reference. Defaults to the target docker reference.")
+	flags.StringVar(&opts.signPassphraseFile, "sign-passphrase-file", "", "File that contains a passphrase for the --sign-by key")
 	flags.StringVar(&opts.digestFile, "digestfile", "", "Write the digest of the pushed image to the specified file")
 	flags.VarP(commonFlag.NewOptionalStringValue(&opts.format), "format", "f", `MANIFEST TYPE (oci, v2s1, or v2s2) to use in the destination (default is manifest type of source, with fallbacks)`)
 	flags.StringSliceVar(&opts.encryptionKeys, "encryption-key", []string{}, "*Experimental* key with the encryption protocol to use needed to encrypt the image (e.g. jwe:/path/to/key.pem)")
 	flags.IntSliceVar(&opts.encryptLayer, "encrypt-layer", []int{}, "*Experimental* the 0-indexed layer indices, with support for negative indexing (e.g. 0 is the first layer, -1 is the last layer)")
 	flags.StringSliceVar(&opts.decryptionKeys, "decryption-key", []string{}, "*Experimental* key needed to decrypt the image")
-	flags.UintVar(&opts.imageParallelCopies, "image-parallel-copies", 0, "Maximum number of image layers to be copied (pulled/pushed) simultaneously. Not setting this field will fall back to containers/image defaults.")
 	return cmd
 }
 
@@ -121,7 +110,7 @@ func parseMultiArch(multiArch string) (copy.ImageListSelection, error) {
 	}
 }
 
-func (opts *copyOptions) run(args []string, stdout io.Writer) (retErr error) {
+func (opts *copyOptions) run(args []string, stdout io.Writer) error {
 	if len(args) != 2 {
 		return errorShouldDisplayUsage{errors.New("Exactly two arguments expected")}
 	}
@@ -136,11 +125,7 @@ func (opts *copyOptions) run(args []string, stdout io.Writer) (retErr error) {
 	if err != nil {
 		return fmt.Errorf("Error loading trust policy: %v", err)
 	}
-	defer func() {
-		if err := policyContext.Destroy(); err != nil {
-			retErr = noteCloseFailure(retErr, "tearing down policy context", err)
-		}
-	}()
+	defer policyContext.Destroy()
 
 	srcRef, err := alltransports.ParseImageName(imageNames[0])
 	if err != nil {
@@ -237,72 +222,25 @@ func (opts *copyOptions) run(args []string, stdout io.Writer) (retErr error) {
 		decConfig = cc.DecryptConfig
 	}
 
-	// c/image/copy.Image does allow creating both simple signing and sigstore signatures simultaneously,
-	// with independent passphrases, but that would make the CLI probably too confusing.
-	// For now, use the passphrase with either, but only one of them.
-	if opts.signPassphraseFile != "" && opts.signByFingerprint != "" && opts.signBySigstorePrivateKey != "" {
-		return fmt.Errorf("Only one of --sign-by and sign-by-sigstore-private-key can be used with sign-passphrase-file")
-	}
-	var passphrase string
-	if opts.signPassphraseFile != "" {
-		p, err := cli.ReadPassphraseFile(opts.signPassphraseFile)
-		if err != nil {
-			return err
-		}
-		passphrase = p
-	} else if opts.signBySigstorePrivateKey != "" {
-		p, err := promptForPassphrase(opts.signBySigstorePrivateKey, os.Stdin, os.Stdout)
-		if err != nil {
-			return err
-		}
-		passphrase = p
-	} // opts.signByFingerprint triggers a GPG-agent passphrase prompt, possibly using a more secure channel, so we usually shouldn’t prompt ourselves if no passphrase was explicitly provided.
-
-	var signers []*signer.Signer
-	if opts.signBySigstoreParamFile != "" {
-		signer, err := sigstore.NewSignerFromParameterFile(opts.signBySigstoreParamFile, &sigstore.Options{
-			PrivateKeyPassphrasePrompt: func(keyFile string) (string, error) {
-				return promptForPassphrase(keyFile, os.Stdin, os.Stdout)
-			},
-			Stdin:  os.Stdin,
-			Stdout: stdout,
-		})
-		if err != nil {
-			return fmt.Errorf("Error using --sign-by-sigstore: %w", err)
-		}
-		defer signer.Close()
-		signers = append(signers, signer)
+	passphrase, err := cli.ReadPassphraseFile(opts.signPassphraseFile)
+	if err != nil {
+		return err
 	}
 
-	var signIdentity reference.Named = nil
-	if opts.signIdentity != "" {
-		signIdentity, err = reference.ParseNamed(opts.signIdentity)
-		if err != nil {
-			return fmt.Errorf("Could not parse --sign-identity: %v", err)
-		}
-	}
-
-	opts.destImage.warnAboutIneffectiveOptions(destRef.Transport())
-
-	return retry.IfNecessary(ctx, func() error {
+	return retry.RetryIfNecessary(ctx, func() error {
 		manifestBytes, err := copy.Image(ctx, policyContext, destRef, srcRef, &copy.Options{
-			RemoveSignatures:                 opts.removeSignatures,
-			Signers:                          signers,
-			SignBy:                           opts.signByFingerprint,
-			SignPassphrase:                   passphrase,
-			SignBySigstorePrivateKeyFile:     opts.signBySigstorePrivateKey,
-			SignSigstorePrivateKeyPassphrase: []byte(passphrase),
-			SignIdentity:                     signIdentity,
-			ReportWriter:                     stdout,
-			SourceCtx:                        sourceCtx,
-			DestinationCtx:                   destinationCtx,
-			ForceManifestMIMEType:            manifestType,
-			ImageListSelection:               imageListSelection,
-			PreserveDigests:                  opts.preserveDigests,
-			OciDecryptConfig:                 decConfig,
-			OciEncryptLayers:                 encLayers,
-			OciEncryptConfig:                 encConfig,
-			MaxParallelDownloads:             opts.imageParallelCopies,
+			RemoveSignatures:      opts.removeSignatures,
+			SignBy:                opts.signByFingerprint,
+			SignPassphrase:        passphrase,
+			ReportWriter:          stdout,
+			SourceCtx:             sourceCtx,
+			DestinationCtx:        destinationCtx,
+			ForceManifestMIMEType: manifestType,
+			ImageListSelection:    imageListSelection,
+			PreserveDigests:       opts.preserveDigests,
+			OciDecryptConfig:      decConfig,
+			OciEncryptLayers:      encLayers,
+			OciEncryptConfig:      encConfig,
 		})
 		if err != nil {
 			return err
@@ -312,7 +250,7 @@ func (opts *copyOptions) run(args []string, stdout io.Writer) (retErr error) {
 			if err != nil {
 				return err
 			}
-			if err = os.WriteFile(opts.digestFile, []byte(manifestDigest.String()), 0644); err != nil {
+			if err = ioutil.WriteFile(opts.digestFile, []byte(manifestDigest.String()), 0644); err != nil {
 				return fmt.Errorf("Failed to write digest to file %q: %w", opts.digestFile, err)
 			}
 		}

cmd/skopeo/delete.go

@@ -15,7 +15,7 @@ import (
 type deleteOptions struct {
 	global    *globalOptions
 	image     *imageOptions
-	retryOpts *retry.Options
+	retryOpts *retry.RetryOptions
 }
 
 func deleteCmd(global *globalOptions) *cobra.Command {
@@ -35,9 +35,8 @@ Supported transports:
 %s
 See skopeo(1) section "IMAGE NAMES" for the expected format
 `, strings.Join(transports.ListNames(), ", ")),
-		RunE:              commandAction(opts.run),
-		Example:           `skopeo delete docker://registry.example.com/example/pause:latest`,
-		ValidArgsFunction: autocompleteSupportedTransports,
+		RunE:    commandAction(opts.run),
+		Example: `skopeo delete docker://registry.example.com/example/pause:latest`,
 	}
 	adjustUsage(cmd)
 	flags := cmd.Flags()
@@ -70,7 +69,7 @@ func (opts *deleteOptions) run(args []string, stdout io.Writer) error {
 	ctx, cancel := opts.global.commandTimeoutContext()
 	defer cancel()
 
-	return retry.IfNecessary(ctx, func() error {
+	return retry.RetryIfNecessary(ctx, func() error {
 		return ref.DeleteImage(ctx, sys)
 	}, opts.retryOpts)
 }

cmd/skopeo/generate_sigstore_key.go

@@ -1,90 +0,0 @@
-package main
-
-import (
-	"errors"
-	"fmt"
-	"io"
-	"io/fs"
-	"os"
-
-	"github.com/containers/image/v5/pkg/cli"
-	"github.com/containers/image/v5/signature/sigstore"
-	"github.com/spf13/cobra"
-)
-
-type generateSigstoreKeyOptions struct {
-	outputPrefix   string
-	passphraseFile string
-}
-
-func generateSigstoreKeyCmd() *cobra.Command {
-	var opts generateSigstoreKeyOptions
-	cmd := &cobra.Command{
-		Use:     "generate-sigstore-key [command options] --output-prefix PREFIX",
-		Short:   "Generate a sigstore public/private key pair",
-		RunE:    commandAction(opts.run),
-		Example: "skopeo generate-sigstore-key --output-prefix my-key",
-	}
-	adjustUsage(cmd)
-	flags := cmd.Flags()
-	flags.StringVar(&opts.outputPrefix, "output-prefix", "", "Write the keys to `PREFIX`.pub and `PREFIX`.private")
-	flags.StringVar(&opts.passphraseFile, "passphrase-file", "", "Read a passphrase for the private key from `PATH`")
-	return cmd
-}
-
-// ensurePathDoesNotExist verifies that path does not refer to an existing file,
-// and returns an error if so.
-func ensurePathDoesNotExist(path string) error {
-	switch _, err := os.Stat(path); {
-	case err == nil:
-		return fmt.Errorf("Refusing to overwrite existing %q", path)
-	case errors.Is(err, fs.ErrNotExist):
-		return nil
-	default:
-		return fmt.Errorf("Error checking existence of %q: %w", path, err)
-	}
-}
-
-func (opts *generateSigstoreKeyOptions) run(args []string, stdout io.Writer) error {
-	if len(args) != 0 || opts.outputPrefix == "" {
-		return errors.New("Usage: generate-sigstore-key --output-prefix PREFIX")
-	}
-
-	pubKeyPath := opts.outputPrefix + ".pub"
-	privateKeyPath := opts.outputPrefix + ".private"
-	if err := ensurePathDoesNotExist(pubKeyPath); err != nil {
-		return err
-	}
-	if err := ensurePathDoesNotExist(privateKeyPath); err != nil {
-		return err
-	}
-
-	var passphrase string
-	if opts.passphraseFile != "" {
-		p, err := cli.ReadPassphraseFile(opts.passphraseFile)
-		if err != nil {
-			return err
-		}
-		passphrase = p
-	} else {
-		p, err := promptForPassphrase(privateKeyPath, os.Stdin, os.Stdout)
-		if err != nil {
-			return err
-		}
-		passphrase = p
-	}
-
-	keys, err := sigstore.GenerateKeyPair([]byte(passphrase))
-	if err != nil {
-		return fmt.Errorf("Error generating key pair: %w", err)
-	}
-
-	if err := os.WriteFile(privateKeyPath, keys.PrivateKey, 0600); err != nil {
-		return fmt.Errorf("Error writing private key to %q: %w", privateKeyPath, err)
-	}
-	if err := os.WriteFile(pubKeyPath, keys.PublicKey, 0644); err != nil {
-		return fmt.Errorf("Error writing private key to %q: %w", pubKeyPath, err)
-	}
-	fmt.Fprintf(stdout, "Key written to %q and %q", privateKeyPath, pubKeyPath)
-	return nil
-}

cmd/skopeo/generate_sigstore_key_test.go

@@ -1,79 +0,0 @@
-package main
-
-import (
-	"os"
-	"path/filepath"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func TestGenerateSigstoreKey(t *testing.T) {
-	// Invalid command-line arguments
-	for _, args := range [][]string{
-		{},
-		{"--output-prefix", "foo", "a1"},
-	} {
-		out, err := runSkopeo(append([]string{"generate-sigstore-key"}, args...)...)
-		assertTestFailed(t, out, err, "Usage")
-	}
-
-	// One of the destination files already exists
-	outputSuffixes := []string{".pub", ".private"}
-	for _, suffix := range outputSuffixes {
-		dir := t.TempDir()
-		prefix := filepath.Join(dir, "prefix")
-		err := os.WriteFile(prefix+suffix, []byte{}, 0600)
-		require.NoError(t, err)
-		out, err := runSkopeo("generate-sigstore-key",
-			"--output-prefix", prefix, "--passphrase-file", "/dev/null",
-		)
-		assertTestFailed(t, out, err, "Refusing to overwrite")
-	}
-
-	// One of the destinations is inaccessible (simulate by a symlink that tries to
-	// traverse a non-directory)
-	for _, suffix := range outputSuffixes {
-		dir := t.TempDir()
-		nonDirectory := filepath.Join(dir, "nondirectory")
-		err := os.WriteFile(nonDirectory, []byte{}, 0600)
-		require.NoError(t, err)
-		prefix := filepath.Join(dir, "prefix")
-		err = os.Symlink(filepath.Join(nonDirectory, "unaccessible"), prefix+suffix)
-		require.NoError(t, err)
-		out, err := runSkopeo("generate-sigstore-key",
-			"--output-prefix", prefix, "--passphrase-file", "/dev/null",
-		)
-		assertTestFailed(t, out, err, prefix+suffix) // + an OS-specific error message
-	}
-	destDir := t.TempDir()
-	// Error reading passphrase
-	out, err := runSkopeo("generate-sigstore-key",
-		"--output-prefix", filepath.Join(destDir, "prefix"),
-		"--passphrase-file", filepath.Join(destDir, "this-does-not-exist"),
-	)
-	assertTestFailed(t, out, err, "this-does-not-exist")
-
-	// (The interactive passphrase prompting is not yet tested)
-
-	// Error writing outputs is untested: when unit tests run as root, we can’t use permissions on a directory to cause write failures,
-	// with the --output-prefix mechanism, and refusing to even start writing to pre-exisiting files, directories are the only mechanism
-	// we have to trigger a write failure.
-
-	// Success
-	// Just a smoke-test, usability of the keys is tested in the generate implementation.
-	dir := t.TempDir()
-	prefix := filepath.Join(dir, "prefix")
-	passphraseFile := filepath.Join(dir, "passphrase")
-	err = os.WriteFile(passphraseFile, []byte("some passphrase"), 0600)
-	require.NoError(t, err)
-	out, err = runSkopeo("generate-sigstore-key",
-		"--output-prefix", prefix, "--passphrase-file", passphraseFile,
-	)
-	assert.NoError(t, err)
-	for _, suffix := range outputSuffixes {
-		assert.Contains(t, out, prefix+suffix)
-	}
-
-}

cmd/skopeo/inspect.go

@@ -2,10 +2,12 @@ package main
 
 import (
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io"
+	"os"
 	"strings"
+	"text/tabwriter"
+	"text/template"
 
 	"github.com/containers/common/pkg/report"
 	"github.com/containers/common/pkg/retry"
@@ -15,8 +17,8 @@ import (
 	"github.com/containers/image/v5/transports"
 	"github.com/containers/image/v5/types"
 	"github.com/containers/skopeo/cmd/skopeo/inspect"
-	"github.com/docker/distribution/registry/api/errcode"
 	v1 "github.com/opencontainers/image-spec/specs-go/v1"
+	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 )
@@ -24,7 +26,7 @@ import (
 type inspectOptions struct {
 	global        *globalOptions
 	image         *imageOptions
-	retryOpts     *retry.Options
+	retryOpts     *retry.RetryOptions
 	format        string
 	raw           bool // Output the raw manifest instead of parsing information about the image
 	config        bool // Output the raw config blob instead of parsing information about the image
@@ -51,9 +53,8 @@ See skopeo(1) section "IMAGE NAMES" for the expected format
 `, strings.Join(transports.ListNames(), ", ")),
 		RunE: commandAction(opts.run),
 		Example: `skopeo inspect docker://registry.fedoraproject.org/fedora
-skopeo inspect --config docker://docker.io/alpine
-skopeo inspect --format "Name: {{.Name}} Digest: {{.Digest}}" docker://registry.access.redhat.com/ubi8`,
-		ValidArgsFunction: autocompleteSupportedTransports,
+  skopeo inspect --config docker://docker.io/alpine
+  skopeo inspect  --format "Name: {{.Name}} Digest: {{.Digest}}" docker://registry.access.redhat.com/ubi8`,
 	}
 	adjustUsage(cmd)
 	flags := cmd.Flags()
@@ -72,6 +73,7 @@ func (opts *inspectOptions) run(args []string, stdout io.Writer) (retErr error)
 		rawManifest []byte
 		src         types.ImageSource
 		imgInspect  *types.ImageInspectInfo
+		data        []interface{}
 	)
 	ctx, cancel := opts.global.commandTimeoutContext()
 	defer cancel()
@@ -93,30 +95,30 @@ func (opts *inspectOptions) run(args []string, stdout io.Writer) (retErr error)
 		return err
 	}
 
-	if err := retry.IfNecessary(ctx, func() error {
+	if err := retry.RetryIfNecessary(ctx, func() error {
 		src, err = parseImageSource(ctx, opts.image, imageName)
 		return err
 	}, opts.retryOpts); err != nil {
-		return fmt.Errorf("Error parsing image name %q: %w", imageName, err)
+		return errors.Wrapf(err, "Error parsing image name %q", imageName)
 	}
 
 	defer func() {
 		if err := src.Close(); err != nil {
-			retErr = noteCloseFailure(retErr, "closing image", err)
+			retErr = errors.Wrapf(retErr, fmt.Sprintf("(could not close image: %v) ", err))
 		}
 	}()
 
-	if err := retry.IfNecessary(ctx, func() error {
+	if err := retry.RetryIfNecessary(ctx, func() error {
 		rawManifest, _, err = src.GetManifest(ctx, nil)
 		return err
 	}, opts.retryOpts); err != nil {
-		return fmt.Errorf("Error retrieving manifest for image: %w", err)
+		return errors.Wrapf(err, "Error retrieving manifest for image")
 	}
 
 	if opts.raw && !opts.config {
 		_, err := stdout.Write(rawManifest)
 		if err != nil {
-			return fmt.Errorf("Error writing manifest to standard output: %w", err)
+			return fmt.Errorf("Error writing manifest to standard output: %v", err)
 		}
 
 		return nil
@@ -124,37 +126,48 @@ func (opts *inspectOptions) run(args []string, stdout io.Writer) (retErr error)
 
 	img, err := image.FromUnparsedImage(ctx, sys, image.UnparsedInstance(src, nil))
 	if err != nil {
-		return fmt.Errorf("Error parsing manifest for image: %w", err)
+		return errors.Wrapf(err, "Error parsing manifest for image")
 	}
 
 	if opts.config && opts.raw {
 		var configBlob []byte
-		if err := retry.IfNecessary(ctx, func() error {
+		if err := retry.RetryIfNecessary(ctx, func() error {
 			configBlob, err = img.ConfigBlob(ctx)
 			return err
 		}, opts.retryOpts); err != nil {
-			return fmt.Errorf("Error reading configuration blob: %w", err)
+			return errors.Wrapf(err, "Error reading configuration blob")
 		}
 		_, err = stdout.Write(configBlob)
 		if err != nil {
-			return fmt.Errorf("Error writing configuration blob to standard output: %w", err)
+			return errors.Wrapf(err, "Error writing configuration blob to standard output")
 		}
 		return nil
 	} else if opts.config {
 		var config *v1.Image
-		if err := retry.IfNecessary(ctx, func() error {
+		if err := retry.RetryIfNecessary(ctx, func() error {
 			config, err = img.OCIConfig(ctx)
 			return err
 		}, opts.retryOpts); err != nil {
-			return fmt.Errorf("Error reading OCI-formatted configuration data: %w", err)
+			return errors.Wrapf(err, "Error reading OCI-formatted configuration data")
 		}
-		if err := opts.writeOutput(stdout, config); err != nil {
-			return fmt.Errorf("Error writing OCI-formatted configuration data to standard output: %w", err)
+		if report.IsJSON(opts.format) || opts.format == "" {
+			var out []byte
+			out, err = json.MarshalIndent(config, "", "    ")
+			if err == nil {
+				fmt.Fprintf(stdout, "%s\n", string(out))
+			}
+		} else {
+			row := "{{range . }}" + report.NormalizeFormat(opts.format) + "{{end}}"
+			data = append(data, config)
+			err = printTmpl(row, data)
+		}
+		if err != nil {
+			return errors.Wrapf(err, "Error writing OCI-formatted configuration data to standard output")
 		}
 		return nil
 	}
 
-	if err := retry.IfNecessary(ctx, func() error {
+	if err := retry.RetryIfNecessary(ctx, func() error {
 		imgInspect, err = img.Inspect(ctx)
 		return err
 	}, opts.retryOpts); err != nil {
@@ -172,12 +185,11 @@ func (opts *inspectOptions) run(args []string, stdout io.Writer) (retErr error)
 		Architecture:  imgInspect.Architecture,
 		Os:            imgInspect.Os,
 		Layers:        imgInspect.Layers,
-		LayersData:    imgInspect.LayersData,
 		Env:           imgInspect.Env,
 	}
 	outputData.Digest, err = manifest.Digest(rawManifest)
 	if err != nil {
-		return fmt.Errorf("Error computing manifest digest: %w", err)
+		return errors.Wrapf(err, "Error computing manifest digest")
 	}
 	if dockerRef := img.Reference().DockerReference(); dockerRef != nil {
 		outputData.Name = dockerRef.Name()
@@ -189,48 +201,34 @@ func (opts *inspectOptions) run(args []string, stdout io.Writer) (retErr error)
 		}
 		outputData.RepoTags, err = docker.GetRepositoryTags(ctx, sys, img.Reference())
 		if err != nil {
-			// Some registries may decide to block the "list all tags" endpoint;
-			// gracefully allow the inspect to continue in this case:
-			fatalFailure := true
-			// - AWS ECR rejects it if the "ecr:ListImages" action is not allowed.
-			//   https://github.com/containers/skopeo/issues/726
-			var ec errcode.ErrorCoder
-			if ok := errors.As(err, &ec); ok && ec.ErrorCode() == errcode.ErrorCodeDenied {
-				fatalFailure = false
-			}
-			// - public.ecr.aws does not implement the endpoint at all, and fails with 404:
-			//   https://github.com/containers/skopeo/issues/1230
-			//   This is actually "code":"NOT_FOUND", and the parser doesn’t preserve that.
-			//   So, also check the error text.
-			if ok := errors.As(err, &ec); ok && ec.ErrorCode() == errcode.ErrorCodeUnknown {
-				var e errcode.Error
-				if ok := errors.As(err, &e); ok && e.Code == errcode.ErrorCodeUnknown && e.Message == "404 page not found" {
-					fatalFailure = false
-				}
-			}
-			if fatalFailure {
-				return fmt.Errorf("Error determining repository tags: %w", err)
+			// some registries may decide to block the "list all tags" endpoint
+			// gracefully allow the inspect to continue in this case. Currently
+			// the IBM Bluemix container registry has this restriction.
+			// In addition, AWS ECR rejects it with 403 (Forbidden) if the "ecr:ListImages"
+			// action is not allowed.
+			if !strings.Contains(err.Error(), "401") && !strings.Contains(err.Error(), "403") {
+				return errors.Wrapf(err, "Error determining repository tags")
 			}
 			logrus.Warnf("Registry disallows tag list retrieval; skipping")
 		}
 	}
-	return opts.writeOutput(stdout, outputData)
-}
-
-// writeOutput writes data depending on opts.format to stdout
-func (opts *inspectOptions) writeOutput(stdout io.Writer, data any) error {
 	if report.IsJSON(opts.format) || opts.format == "" {
-		out, err := json.MarshalIndent(data, "", "    ")
+		out, err := json.MarshalIndent(outputData, "", "    ")
 		if err == nil {
 			fmt.Fprintf(stdout, "%s\n", string(out))
 		}
 		return err
 	}
+	row := "{{range . }}" + report.NormalizeFormat(opts.format) + "{{end}}"
+	data = append(data, outputData)
+	return printTmpl(row, data)
+}
 
-	rpt, err := report.New(stdout, "skopeo inspect").Parse(report.OriginUser, opts.format)
+func printTmpl(row string, data []interface{}) error {
+	t, err := template.New("skopeo inspect").Parse(row)
 	if err != nil {
 		return err
 	}
-	defer rpt.Flush()
-	return rpt.Execute([]any{data})
+	w := tabwriter.NewWriter(os.Stdout, 8, 2, 2, ' ', 0)
+	return t.Execute(w, data)
 }

cmd/skopeo/inspect/output.go

@@ -3,7 +3,6 @@ package inspect
 import (
 	"time"
 
-	"github.com/containers/image/v5/types"
 	digest "github.com/opencontainers/go-digest"
 )
 
@@ -20,6 +19,5 @@ type Output struct {
 	Architecture  string
 	Os            string
 	Layers        []string
-	LayersData    []types.ImageInspectLayer
 	Env           []string
 }

cmd/skopeo/layers.go

@@ -1,9 +1,9 @@
 package main
 
 import (
-	"errors"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"os"
 	"strings"
 
@@ -13,13 +13,14 @@ import (
 	"github.com/containers/image/v5/pkg/blobinfocache"
 	"github.com/containers/image/v5/types"
 	"github.com/opencontainers/go-digest"
+	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
 
 type layersOptions struct {
 	global    *globalOptions
 	image     *imageOptions
-	retryOpts *retry.Options
+	retryOpts *retry.RetryOptions
 }
 
 func layersCmd(global *globalOptions) *cobra.Command {
@@ -68,25 +69,25 @@ func (opts *layersOptions) run(args []string, stdout io.Writer) (retErr error) {
 		rawSource types.ImageSource
 		src       types.ImageCloser
 	)
-	if err = retry.IfNecessary(ctx, func() error {
+	if err = retry.RetryIfNecessary(ctx, func() error {
 		rawSource, err = parseImageSource(ctx, opts.image, imageName)
 		return err
 	}, opts.retryOpts); err != nil {
 		return err
 	}
-	if err = retry.IfNecessary(ctx, func() error {
+	if err = retry.RetryIfNecessary(ctx, func() error {
 		src, err = image.FromSource(ctx, sys, rawSource)
 		return err
 	}, opts.retryOpts); err != nil {
 		if closeErr := rawSource.Close(); closeErr != nil {
-			return fmt.Errorf("%w (closing image source: %v)", err, closeErr)
+			return errors.Wrapf(err, " (close error: %v)", closeErr)
 		}
 
 		return err
 	}
 	defer func() {
 		if err := src.Close(); err != nil {
-			retErr = noteCloseFailure(retErr, "closing image", err)
+			retErr = errors.Wrapf(retErr, " (close error: %v)", err)
 		}
 	}()
 
@@ -121,7 +122,7 @@ func (opts *layersOptions) run(args []string, stdout io.Writer) (retErr error) {
 		}
 	}
 
-	tmpDir, err := os.MkdirTemp(".", "layers-")
+	tmpDir, err := ioutil.TempDir(".", "layers-")
 	if err != nil {
 		return err
 	}
@@ -136,7 +137,7 @@ func (opts *layersOptions) run(args []string, stdout io.Writer) (retErr error) {
 
 	defer func() {
 		if err := dest.Close(); err != nil {
-			retErr = noteCloseFailure(retErr, "closing destination", err)
+			retErr = errors.Wrapf(retErr, " (close error: %v)", err)
 		}
 	}()
 
@@ -145,7 +146,7 @@ func (opts *layersOptions) run(args []string, stdout io.Writer) (retErr error) {
 			r        io.ReadCloser
 			blobSize int64
 		)
-		if err = retry.IfNecessary(ctx, func() error {
+		if err = retry.RetryIfNecessary(ctx, func() error {
 			r, blobSize, err = rawSource.GetBlob(ctx, types.BlobInfo{Digest: bd.digest, Size: -1}, cache)
 			return err
 		}, opts.retryOpts); err != nil {
@@ -153,14 +154,14 @@ func (opts *layersOptions) run(args []string, stdout io.Writer) (retErr error) {
 		}
 		if _, err := dest.PutBlob(ctx, r, types.BlobInfo{Digest: bd.digest, Size: blobSize}, cache, bd.isConfig); err != nil {
 			if closeErr := r.Close(); closeErr != nil {
-				return fmt.Errorf("%w (close error: %v)", err, closeErr)
+				return errors.Wrapf(err, " (close error: %v)", closeErr)
 			}
 			return err
 		}
 	}
 
 	var manifest []byte
-	if err = retry.IfNecessary(ctx, func() error {
+	if err = retry.RetryIfNecessary(ctx, func() error {
 		manifest, _, err = src.Manifest(ctx)
 		return err
 	}, opts.retryOpts); err != nil {

cmd/skopeo/list_tags.go

@@ -3,44 +3,29 @@ package main
 import (
 	"context"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io"
-	"sort"
 	"strings"
 
 	"github.com/containers/common/pkg/retry"
 	"github.com/containers/image/v5/docker"
-	"github.com/containers/image/v5/docker/archive"
 	"github.com/containers/image/v5/docker/reference"
 	"github.com/containers/image/v5/transports/alltransports"
 	"github.com/containers/image/v5/types"
+	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
-	"golang.org/x/exp/maps"
 )
 
 // tagListOutput is the output format of (skopeo list-tags), primarily so that we can format it with a simple json.MarshalIndent.
 type tagListOutput struct {
-	Repository string `json:",omitempty"`
+	Repository string
 	Tags       []string
 }
 
 type tagsOptions struct {
 	global    *globalOptions
 	image     *imageOptions
-	retryOpts *retry.Options
-}
-
-var transportHandlers = map[string]func(ctx context.Context, sys *types.SystemContext, opts *tagsOptions, userInput string) (repositoryName string, tagListing []string, err error){
-	docker.Transport.Name():  listDockerRepoTags,
-	archive.Transport.Name(): listDockerArchiveTags,
-}
-
-// supportedTransports returns all the supported transports
-func supportedTransports(joinStr string) string {
-	res := maps.Keys(transportHandlers)
-	sort.Strings(res)
-	return strings.Join(res, joinStr)
+	retryOpts *retry.RetryOptions
 }
 
 func tagsCmd(global *globalOptions) *cobra.Command {
@@ -53,14 +38,13 @@ func tagsCmd(global *globalOptions) *cobra.Command {
 		image:     imageOpts,
 		retryOpts: retryOpts,
 	}
-
 	cmd := &cobra.Command{
-		Use:   "list-tags [command options] SOURCE-IMAGE",
-		Short: "List tags in the transport/repository specified by the SOURCE-IMAGE",
-		Long: `Return the list of tags from the transport/repository "SOURCE-IMAGE"
+		Use:   "list-tags [command options] REPOSITORY-NAME",
+		Short: "List tags in the transport/repository specified by the REPOSITORY-NAME",
+		Long: `Return the list of tags from the transport/repository "REPOSITORY-NAME"
 
 Supported transports:
-` + supportedTransports(" ") + `
+docker
 
 See skopeo-list-tags(1) section "REPOSITORY NAMES" for the expected format
 `,
@@ -78,12 +62,16 @@ See skopeo-list-tags(1) section "REPOSITORY NAMES" for the expected format
 // Customized version of the alltransports.ParseImageName and docker.ParseReference that does not place a default tag in the reference
 // Would really love to not have this, but needed to enforce tag-less and digest-less names
 func parseDockerRepositoryReference(refString string) (types.ImageReference, error) {
-	dockerRefString, ok := strings.CutPrefix(refString, docker.Transport.Name()+"://")
-	if !ok {
-		return nil, fmt.Errorf("docker: image reference %s does not start with %s://", refString, docker.Transport.Name())
+	if !strings.HasPrefix(refString, docker.Transport.Name()+"://") {
+		return nil, errors.Errorf("docker: image reference %s does not start with %s://", refString, docker.Transport.Name())
 	}
 
-	ref, err := reference.ParseNormalizedNamed(dockerRefString)
+	parts := strings.SplitN(refString, ":", 2)
+	if len(parts) != 2 {
+		return nil, errors.Errorf(`Invalid image name "%s", expected colon-separated transport:reference`, refString)
+	}
+
+	ref, err := reference.ParseNormalizedNamed(strings.TrimPrefix(parts[1], "//"))
 	if err != nil {
 		return nil, err
 	}
@@ -102,63 +90,11 @@ func listDockerTags(ctx context.Context, sys *types.SystemContext, imgRef types.
 
 	tags, err := docker.GetRepositoryTags(ctx, sys, imgRef)
 	if err != nil {
-		return ``, nil, fmt.Errorf("Error listing repository tags: %w", err)
+		return ``, nil, fmt.Errorf("Error listing repository tags: %v", err)
 	}
 	return repositoryName, tags, nil
 }
 
-// return the tagLists from a docker repo
-func listDockerRepoTags(ctx context.Context, sys *types.SystemContext, opts *tagsOptions, userInput string) (repositoryName string, tagListing []string, err error) {
-	// Do transport-specific parsing and validation to get an image reference
-	imgRef, err := parseDockerRepositoryReference(userInput)
-	if err != nil {
-		return
-	}
-	if err = retry.IfNecessary(ctx, func() error {
-		repositoryName, tagListing, err = listDockerTags(ctx, sys, imgRef)
-		return err
-	}, opts.retryOpts); err != nil {
-		return
-	}
-	return
-}
-
-// return the tagLists from a docker archive file
-func listDockerArchiveTags(_ context.Context, sys *types.SystemContext, _ *tagsOptions, userInput string) (repositoryName string, tagListing []string, err error) {
-	ref, err := alltransports.ParseImageName(userInput)
-	if err != nil {
-		return
-	}
-
-	tarReader, _, err := archive.NewReaderForReference(sys, ref)
-	if err != nil {
-		return
-	}
-	defer tarReader.Close()
-
-	imageRefs, err := tarReader.List()
-	if err != nil {
-		return
-	}
-
-	var repoTags []string
-	for imageIndex, items := range imageRefs {
-		for _, ref := range items {
-			repoTags, err = tarReader.ManifestTagsForReference(ref)
-			if err != nil {
-				return
-			}
-			// handle for each untagged image
-			if len(repoTags) == 0 {
-				repoTags = []string{fmt.Sprintf("@%d", imageIndex)}
-			}
-			tagListing = append(tagListing, repoTags...)
-		}
-	}
-
-	return
-}
-
 func (opts *tagsOptions) run(args []string, stdout io.Writer) (retErr error) {
 	ctx, cancel := opts.global.commandTimeoutContext()
 	defer cancel()
@@ -177,17 +113,23 @@ func (opts *tagsOptions) run(args []string, stdout io.Writer) (retErr error) {
 		return fmt.Errorf("Invalid %q: does not specify a transport", args[0])
 	}
 
+	if transport.Name() != docker.Transport.Name() {
+		return fmt.Errorf("Unsupported transport '%v' for tag listing. Only '%v' currently supported", transport.Name(), docker.Transport.Name())
+	}
+
+	// Do transport-specific parsing and validation to get an image reference
+	imgRef, err := parseDockerRepositoryReference(args[0])
+	if err != nil {
+		return err
+	}
+
 	var repositoryName string
 	var tagListing []string
-
-	if val, ok := transportHandlers[transport.Name()]; ok {
-		repositoryName, tagListing, err = val(ctx, sys, opts, args[0])
-		if err != nil {
-			return err
-		}
-	} else {
-		return fmt.Errorf("Unsupported transport '%s' for tag listing. Only supported: %s",
-			transport.Name(), supportedTransports(", "))
+	if err = retry.RetryIfNecessary(ctx, func() error {
+		repositoryName, tagListing, err = listDockerTags(ctx, sys, imgRef)
+		return err
+	}, opts.retryOpts); err != nil {
+		return err
 	}
 
 	outputData := tagListOutput{

cmd/skopeo/list_tags_test.go

@@ -16,6 +16,7 @@ func TestDockerRepositoryReferenceParser(t *testing.T) {
 		{"docker://somehost.com"},          // Valid default expansion
 		{"docker://nginx"},                 // Valid default expansion
 	} {
+
 		ref, err := parseDockerRepositoryReference(test[0])
 		require.NoError(t, err)
 		expected, err := alltransports.ParseImageName(test[0])
@@ -46,6 +47,7 @@ func TestDockerRepositoryReferenceParserDrift(t *testing.T) {
 		{"docker://somehost.com", "docker.io/library/somehost.com"}, // Valid default expansion
 		{"docker://nginx", "docker.io/library/nginx"},               // Valid default expansion
 	} {
+
 		ref, err := parseDockerRepositoryReference(test[0])
 		ref2, err2 := alltransports.ParseImageName(test[0])
 

cmd/skopeo/login_test.go

@@ -1,18 +0,0 @@
-package main
-
-import (
-	"path/filepath"
-	"testing"
-)
-
-func TestLogin(t *testing.T) {
-	dir := t.TempDir()
-	authFile := filepath.Join(dir, "auth.json")
-	compatAuthFile := filepath.Join(dir, "config.json")
-
-	// Just a trivial smoke-test exercising one error-handling path.
-	// We can’t test full operation without a registry, unit tests should mostly
-	// exist in c/common/pkg/auth, not here.
-	out, err := runSkopeo("login", "--authfile", authFile, "--compat-auth-file", compatAuthFile, "example.com")
-	assertTestFailed(t, out, err, "options for paths to the credential file and to the Docker-compatible credential file can not be set simultaneously")
-}

cmd/skopeo/logout_test.go

@@ -1,25 +0,0 @@
-package main
-
-import (
-	"os"
-	"path/filepath"
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestLogout(t *testing.T) {
-	dir := t.TempDir()
-	authFile := filepath.Join(dir, "auth.json")
-	compatAuthFile := filepath.Join(dir, "config.json")
-
-	// Just a trivial smoke-test exercising one error-handling path.
-	// We can’t test full operation without a registry, unit tests should mostly
-	// exist in c/common/pkg/auth, not here.
-	err := os.WriteFile(authFile, []byte("{}"), 0o700)
-	require.NoError(t, err)
-	err = os.WriteFile(compatAuthFile, []byte("{}"), 0o700)
-	require.NoError(t, err)
-	out, err := runSkopeo("logout", "--authfile", authFile, "--compat-auth-file", compatAuthFile, "example.com")
-	assertTestFailed(t, out, err, "options for paths to the credential file and to the Docker-compatible credential file can not be set simultaneously")
-}

cmd/skopeo/main.go

@@ -55,14 +55,19 @@ func createApp() (*cobra.Command, *globalOptions) {
 	opts := globalOptions{}
 
 	rootCommand := &cobra.Command{
-		Use:               "skopeo",
-		Long:              "Various operations with container images and container image registries",
-		RunE:              requireSubcommand,
-		PersistentPreRunE: opts.before,
-		SilenceUsage:      true,
-		SilenceErrors:     true,
-		// Hide the completion command which is provided by cobra
-		CompletionOptions: cobra.CompletionOptions{HiddenDefaultCmd: true},
+		Use:  "skopeo",
+		Long: "Various operations with container images and container image registries",
+		RunE: requireSubcommand,
+		PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
+			return opts.before(cmd)
+		},
+		SilenceUsage:  true,
+		SilenceErrors: true,
+		// Currently, skopeo uses manually written completions.  Cobra allows
+		// for auto-generating completions for various shells.  Podman is
+		// already making us of that.  If Skopeo decides to follow, please
+		// remove the line below (and hide the `completion` command).
+		CompletionOptions: cobra.CompletionOptions{DisableDefaultCmd: true},
 		// This is documented to parse "local" (non-PersistentFlags) flags of parent commands before
 		// running subcommands and handling their options. We don't really run into such cases,
 		// because all of our flags on rootCommand are in PersistentFlags, except for the deprecated --tls-verify;
@@ -96,7 +101,6 @@ func createApp() (*cobra.Command, *globalOptions) {
 	rootCommand.AddCommand(
 		copyCmd(&opts),
 		deleteCmd(&opts),
-		generateSigstoreKeyCmd(),
 		inspectCmd(&opts),
 		layersCmd(&opts),
 		loginCmd(&opts),
@@ -113,7 +117,7 @@ func createApp() (*cobra.Command, *globalOptions) {
 }
 
 // before is run by the cli package for any command, before running the command-specific handler.
-func (opts *globalOptions) before(cmd *cobra.Command, args []string) error {
+func (opts *globalOptions) before(cmd *cobra.Command) error {
 	if opts.debug {
 		logrus.SetLevel(logrus.DebugLevel)
 	}
@@ -129,10 +133,6 @@ func main() {
 	}
 	rootCmd, _ := createApp()
 	if err := rootCmd.Execute(); err != nil {
-		if isNotFoundImageError(err) {
-			logrus.StandardLogger().Log(logrus.FatalLevel, err)
-			logrus.Exit(2)
-		}
 		logrus.Fatal(err)
 	}
 }

cmd/skopeo/manifest.go

@@ -4,7 +4,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"os"
+	"io/ioutil"
 
 	"github.com/containers/image/v5/manifest"
 	"github.com/spf13/cobra"
@@ -31,7 +31,7 @@ func (opts *manifestDigestOptions) run(args []string, stdout io.Writer) error {
 	}
 	manifestPath := args[0]
 
-	man, err := os.ReadFile(manifestPath)
+	man, err := ioutil.ReadFile(manifestPath)
 	if err != nil {
 		return fmt.Errorf("Error reading manifest from %s: %v", manifestPath, err)
 	}

cmd/skopeo/proxy.go

@@ -74,12 +74,10 @@ import (
 	"github.com/containers/image/v5/image"
 	"github.com/containers/image/v5/manifest"
 	"github.com/containers/image/v5/pkg/blobinfocache"
-	"github.com/containers/image/v5/transports"
 	"github.com/containers/image/v5/transports/alltransports"
 	"github.com/containers/image/v5/types"
 	"github.com/opencontainers/go-digest"
 	imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
-	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 )
 
@@ -90,10 +88,7 @@ import (
 // 0.2.1: Initial version
 // 0.2.2: Added support for fetching image configuration as OCI
 // 0.2.3: Added GetFullConfig
-// 0.2.4: Added OpenImageOptional
-// 0.2.5: Added LayerInfoJSON
-// 0.2.6: Policy Verification before pulling OCI
-const protocolVersion = "0.2.6"
+const protocolVersion = "0.2.3"
 
 // maxMsgSize is the current limit on a packet size.
 // Note that all non-metadata (i.e. payload data) is sent over a pipe.
@@ -103,17 +98,14 @@ const maxMsgSize = 32 * 1024
 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER
 // We hard error if the input JSON numbers we expect to be
 // integers are above this.
-const maxJSONFloat = float64(uint64(1)<<53 - 1)
-
-// sentinelImageID represents "image not found" on the wire
-const sentinelImageID = 0
+const maxJSONFloat = float64(1<<53 - 1)
 
 // request is the JSON serialization of a function call
 type request struct {
 	// Method is the name of the function
 	Method string `json:"method"`
 	// Args is the arguments (parsed inside the function)
-	Args []any `json:"args"`
+	Args []interface{} `json:"args"`
 }
 
 // reply is serialized to JSON as the return value from a function call.
@@ -121,7 +113,7 @@ type reply struct {
 	// Success is true if and only if the call succeeded.
 	Success bool `json:"success"`
 	// Value is an arbitrary value (or values, as array/map) returned from the call.
-	Value any `json:"value"`
+	Value interface{} `json:"value"`
 	// PipeID is an index into open pipes, and should be passed to FinishPipe
 	PipeID uint32 `json:"pipeid"`
 	// Error should be non-empty if Success == false
@@ -131,7 +123,7 @@ type reply struct {
 // replyBuf is our internal deserialization of reply plus optional fd
 type replyBuf struct {
 	// value will be converted to a reply Value
-	value any
+	value interface{}
 	// fd is the read half of a pipe, passed back to the client
 	fd *os.File
 	// pipeid will be provided to the client as PipeID, an index into our open pipes
@@ -152,7 +144,7 @@ type activePipe struct {
 // openImage is an opened image reference
 type openImage struct {
 	// id is an opaque integer handle
-	id        uint64
+	id        uint32
 	src       types.ImageSource
 	cachedimg types.Image
 }
@@ -167,23 +159,15 @@ type proxyHandler struct {
 	cache  types.BlobInfoCache
 
 	// imageSerial is a counter for open images
-	imageSerial uint64
+	imageSerial uint32
 	// images holds our opened images
-	images map[uint64]*openImage
+	images map[uint32]*openImage
 	// activePipes maps from "pipeid" to a pipe + goroutine pair
 	activePipes map[uint32]*activePipe
 }
 
-// convertedLayerInfo is the reduced form of the OCI type BlobInfo
-// Used in the return value of GetLayerInfo
-type convertedLayerInfo struct {
-	Digest    digest.Digest `json:"digest"`
-	Size      int64         `json:"size"`
-	MediaType string        `json:"media_type"`
-}
-
 // Initialize performs one-time initialization, and returns the protocol version
-func (h *proxyHandler) Initialize(args []any) (replyBuf, error) {
+func (h *proxyHandler) Initialize(args []interface{}) (replyBuf, error) {
 	h.lock.Lock()
 	defer h.lock.Unlock()
 
@@ -212,11 +196,7 @@ func (h *proxyHandler) Initialize(args []any) (replyBuf, error) {
 
 // OpenImage accepts a string image reference i.e. TRANSPORT:REF - like `skopeo copy`.
 // The return value is an opaque integer handle.
-func (h *proxyHandler) OpenImage(args []any) (replyBuf, error) {
-	return h.openImageImpl(args, false)
-}
-
-func (h *proxyHandler) openImageImpl(args []any, allowNotFound bool) (retReplyBuf replyBuf, retErr error) {
+func (h *proxyHandler) OpenImage(args []interface{}) (replyBuf, error) {
 	h.lock.Lock()
 	defer h.lock.Unlock()
 	var ret replyBuf
@@ -238,34 +218,9 @@ func (h *proxyHandler) openImageImpl(args []any, allowNotFound bool) (retReplyBu
 	}
 	imgsrc, err := imgRef.NewImageSource(context.Background(), h.sysctx)
 	if err != nil {
-		if allowNotFound && isNotFoundImageError(err) {
-			ret.value = sentinelImageID
-			return ret, nil
-		}
 		return ret, err
 	}
 
-	policyContext, err := h.opts.global.getPolicyContext()
-	if err != nil {
-		return ret, err
-	}
-	defer func() {
-		if err := policyContext.Destroy(); err != nil {
-			retErr = noteCloseFailure(retErr, "tearing down policy context", err)
-		}
-	}()
-
-	unparsedTopLevel := image.UnparsedInstance(imgsrc, nil)
-	allowed, err := policyContext.IsRunningImageAllowed(context.Background(), unparsedTopLevel)
-	if err != nil {
-		return ret, err
-	}
-	if !allowed {
-		return ret, fmt.Errorf("internal inconsistency: policy verification failed without returning an error")
-	}
-
-	// Note that we never return zero as an imageid; this code doesn't yet
-	// handle overflow though.
 	h.imageSerial++
 	openimg := &openImage{
 		id:  h.imageSerial,
@@ -277,14 +232,7 @@ func (h *proxyHandler) openImageImpl(args []any, allowNotFound bool) (retReplyBu
 	return ret, nil
 }
 
-// OpenImage accepts a string image reference i.e. TRANSPORT:REF - like `skopeo copy`.
-// The return value is an opaque integer handle.  If the image does not exist, zero
-// is returned.
-func (h *proxyHandler) OpenImageOptional(args []any) (replyBuf, error) {
-	return h.openImageImpl(args, true)
-}
-
-func (h *proxyHandler) CloseImage(args []any) (replyBuf, error) {
+func (h *proxyHandler) CloseImage(args []interface{}) (replyBuf, error) {
 	h.lock.Lock()
 	defer h.lock.Unlock()
 	var ret replyBuf
@@ -305,8 +253,16 @@ func (h *proxyHandler) CloseImage(args []any) (replyBuf, error) {
 	return ret, nil
 }
 
+func parseImageID(v interface{}) (uint32, error) {
+	imgidf, ok := v.(float64)
+	if !ok {
+		return 0, fmt.Errorf("expecting integer imageid, not %T", v)
+	}
+	return uint32(imgidf), nil
+}
+
 // parseUint64 validates that a number fits inside a JavaScript safe integer
-func parseUint64(v any) (uint64, error) {
+func parseUint64(v interface{}) (uint64, error) {
 	f, ok := v.(float64)
 	if !ok {
 		return 0, fmt.Errorf("expecting numeric, not %T", v)
@@ -317,14 +273,11 @@ func parseUint64(v any) (uint64, error) {
 	return uint64(f), nil
 }
 
-func (h *proxyHandler) parseImageFromID(v any) (*openImage, error) {
-	imgid, err := parseUint64(v)
+func (h *proxyHandler) parseImageFromID(v interface{}) (*openImage, error) {
+	imgid, err := parseImageID(v)
 	if err != nil {
 		return nil, err
 	}
-	if imgid == sentinelImageID {
-		return nil, fmt.Errorf("Invalid imageid value of zero")
-	}
 	imgref, ok := h.images[imgid]
 	if !ok {
 		return nil, fmt.Errorf("no image %v", imgid)
@@ -347,7 +300,7 @@ func (h *proxyHandler) allocPipe() (*os.File, *activePipe, error) {
 
 // returnBytes generates a return pipe() from a byte array
 // In the future it might be nicer to return this via memfd_create()
-func (h *proxyHandler) returnBytes(retval any, buf []byte) (replyBuf, error) {
+func (h *proxyHandler) returnBytes(retval interface{}, buf []byte) (replyBuf, error) {
 	var ret replyBuf
 	piper, f, err := h.allocPipe()
 	if err != nil {
@@ -409,7 +362,7 @@ func (h *proxyHandler) cacheTargetManifest(img *openImage) error {
 
 // GetManifest returns a copy of the manifest, converted to OCI format, along with the original digest.
 // Manifest lists are resolved to the current operating system and architecture.
-func (h *proxyHandler) GetManifest(args []any) (replyBuf, error) {
+func (h *proxyHandler) GetManifest(args []interface{}) (replyBuf, error) {
 	h.lock.Lock()
 	defer h.lock.Unlock()
 
@@ -480,7 +433,7 @@ func (h *proxyHandler) GetManifest(args []any) (replyBuf, error) {
 
 // GetFullConfig returns a copy of the image configuration, converted to OCI format.
 // https://github.com/opencontainers/image-spec/blob/main/config.md
-func (h *proxyHandler) GetFullConfig(args []any) (replyBuf, error) {
+func (h *proxyHandler) GetFullConfig(args []interface{}) (replyBuf, error) {
 	h.lock.Lock()
 	defer h.lock.Unlock()
 
@@ -517,7 +470,7 @@ func (h *proxyHandler) GetFullConfig(args []any) (replyBuf, error) {
 // GetConfig returns a copy of the container runtime configuration, converted to OCI format.
 // Note that due to a historical mistake, this returns not the full image configuration,
 // but just the container runtime configuration.  You should use GetFullConfig instead.
-func (h *proxyHandler) GetConfig(args []any) (replyBuf, error) {
+func (h *proxyHandler) GetConfig(args []interface{}) (replyBuf, error) {
 	h.lock.Lock()
 	defer h.lock.Unlock()
 
@@ -552,7 +505,7 @@ func (h *proxyHandler) GetConfig(args []any) (replyBuf, error) {
 }
 
 // GetBlob fetches a blob, performing digest verification.
-func (h *proxyHandler) GetBlob(args []any) (replyBuf, error) {
+func (h *proxyHandler) GetBlob(args []interface{}) (replyBuf, error) {
 	h.lock.Lock()
 	defer h.lock.Unlock()
 
@@ -589,12 +542,10 @@ func (h *proxyHandler) GetBlob(args []any) (replyBuf, error) {
 
 	piper, f, err := h.allocPipe()
 	if err != nil {
-		blobr.Close()
 		return ret, err
 	}
 	go func() {
 		// Signal completion when we return
-		defer blobr.Close()
 		defer f.wg.Done()
 		verifier := d.Verifier()
 		tr := io.TeeReader(blobr, verifier)
@@ -617,58 +568,8 @@ func (h *proxyHandler) GetBlob(args []any) (replyBuf, error) {
 	return ret, nil
 }
 
-// GetLayerInfo returns data about the layers of an image, useful for reading the layer contents.
-//
-// This needs to be called since the data returned by GetManifest() does not allow to correctly
-// calling GetBlob() for the containers-storage: transport (which doesn’t store the original compressed
-// representations referenced in the manifest).
-func (h *proxyHandler) GetLayerInfo(args []any) (replyBuf, error) {
-	h.lock.Lock()
-	defer h.lock.Unlock()
-
-	var ret replyBuf
-
-	if h.sysctx == nil {
-		return ret, fmt.Errorf("client error: must invoke Initialize")
-	}
-
-	if len(args) != 1 {
-		return ret, fmt.Errorf("found %d args, expecting (imgid)", len(args))
-	}
-
-	imgref, err := h.parseImageFromID(args[0])
-	if err != nil {
-		return ret, err
-	}
-
-	ctx := context.TODO()
-
-	err = h.cacheTargetManifest(imgref)
-	if err != nil {
-		return ret, err
-	}
-	img := imgref.cachedimg
-
-	layerInfos, err := img.LayerInfosForCopy(ctx)
-	if err != nil {
-		return ret, err
-	}
-
-	if layerInfos == nil {
-		layerInfos = img.LayerInfos()
-	}
-
-	layers := make([]convertedLayerInfo, 0, len(layerInfos))
-	for _, layer := range layerInfos {
-		layers = append(layers, convertedLayerInfo{layer.Digest, layer.Size, layer.MediaType})
-	}
-
-	ret.value = layers
-	return ret, nil
-}
-
 // FinishPipe waits for the worker goroutine to finish, and closes the write side of the pipe.
-func (h *proxyHandler) FinishPipe(args []any) (replyBuf, error) {
+func (h *proxyHandler) FinishPipe(args []interface{}) (replyBuf, error) {
 	h.lock.Lock()
 	defer h.lock.Unlock()
 
@@ -687,7 +588,6 @@ func (h *proxyHandler) FinishPipe(args []any) (replyBuf, error) {
 
 	// Wait for the goroutine to complete
 	f.wg.Wait()
-	logrus.Debug("Completed pipe goroutine")
 	// And only now do we close the write half; this forces the client to call this API
 	f.w.Close()
 	// Propagate any errors from the goroutine worker
@@ -696,20 +596,8 @@ func (h *proxyHandler) FinishPipe(args []any) (replyBuf, error) {
 	return ret, err
 }
 
-// close releases all resources associated with this proxy backend
-func (h *proxyHandler) close() {
-	for _, image := range h.images {
-		err := image.src.Close()
-		if err != nil {
-			// This shouldn't be fatal
-			logrus.Warnf("Failed to close image %s: %v", transports.ImageName(image.cachedimg.Reference()), err)
-		}
-	}
-}
-
 // send writes a reply buffer to the socket
 func (buf replyBuf) send(conn *net.UnixConn, err error) error {
-	logrus.Debugf("Sending reply: err=%v value=%v pipeid=%v", err, buf.value, buf.pipeid)
 	replyToSerialize := reply{
 		Success: err == nil,
 		Value:   buf.value,
@@ -776,24 +664,13 @@ func proxyCmd(global *globalOptions) *cobra.Command {
 // processRequest dispatches a remote request.
 // replyBuf is the result of the invocation.
 // terminate should be true if processing of requests should halt.
-func (h *proxyHandler) processRequest(readBytes []byte) (rb replyBuf, terminate bool, err error) {
-	var req request
-
-	// Parse the request JSON
-	if err = json.Unmarshal(readBytes, &req); err != nil {
-		err = fmt.Errorf("invalid request: %v", err)
-		return
-	}
-	logrus.Debugf("Executing method %s", req.Method)
-
+func (h *proxyHandler) processRequest(req request) (rb replyBuf, terminate bool, err error) {
 	// Dispatch on the method
 	switch req.Method {
 	case "Initialize":
 		rb, err = h.Initialize(req.Args)
 	case "OpenImage":
 		rb, err = h.OpenImage(req.Args)
-	case "OpenImageOptional":
-		rb, err = h.OpenImageOptional(req.Args)
 	case "CloseImage":
 		rb, err = h.CloseImage(req.Args)
 	case "GetManifest":
@@ -804,14 +681,10 @@ func (h *proxyHandler) processRequest(readBytes []byte) (rb replyBuf, terminate
 		rb, err = h.GetFullConfig(req.Args)
 	case "GetBlob":
 		rb, err = h.GetBlob(req.Args)
-	case "GetLayerInfo":
-		rb, err = h.GetLayerInfo(req.Args)
 	case "FinishPipe":
 		rb, err = h.FinishPipe(req.Args)
 	case "Shutdown":
 		terminate = true
-	// NOTE: If you add a method here, you should very likely be bumping the
-	// const protocolVersion above.
 	default:
 		err = fmt.Errorf("unknown method: %s", req.Method)
 	}
@@ -822,10 +695,9 @@ func (h *proxyHandler) processRequest(readBytes []byte) (rb replyBuf, terminate
 func (opts *proxyOptions) run(args []string, stdout io.Writer) error {
 	handler := &proxyHandler{
 		opts:        opts,
-		images:      make(map[uint64]*openImage),
+		images:      make(map[uint32]*openImage),
 		activePipes: make(map[uint32]*activePipe),
 	}
-	defer handler.close()
 
 	// Convert the socket FD passed by client into a net.FileConn
 	fd := os.NewFile(uintptr(opts.sockFd), "sock")
@@ -845,16 +717,18 @@ func (opts *proxyOptions) run(args []string, stdout io.Writer) error {
 			}
 			return fmt.Errorf("reading socket: %v", err)
 		}
+		// Parse the request JSON
 		readbuf := buf[0:n]
+		var req request
+		if err := json.Unmarshal(readbuf, &req); err != nil {
+			rb := replyBuf{}
+			rb.send(conn, fmt.Errorf("invalid request: %v", err))
+		}
 
-		rb, terminate, err := handler.processRequest(readbuf)
+		rb, terminate, err := handler.processRequest(req)
 		if terminate {
-			logrus.Debug("terminating")
 			return nil
 		}
-
-		if err := rb.send(conn, err); err != nil {
-			return fmt.Errorf("writing to socket: %w", err)
-		}
+		rb.send(conn, err)
 	}
 }

cmd/skopeo/signing.go

@@ -5,8 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"os"
-	"strings"
+	"io/ioutil"
 
 	"github.com/containers/image/v5/pkg/cli"
 	"github.com/containers/image/v5/signature"
@@ -40,14 +39,14 @@ func (opts *standaloneSignOptions) run(args []string, stdout io.Writer) error {
 	dockerReference := args[1]
 	fingerprint := args[2]
 
-	manifest, err := os.ReadFile(manifestPath)
+	manifest, err := ioutil.ReadFile(manifestPath)
 	if err != nil {
-		return fmt.Errorf("Error reading %s: %w", manifestPath, err)
+		return fmt.Errorf("Error reading %s: %v", manifestPath, err)
 	}
 
 	mech, err := signature.NewGPGSigningMechanism()
 	if err != nil {
-		return fmt.Errorf("Error initializing GPG: %w", err)
+		return fmt.Errorf("Error initializing GPG: %v", err)
 	}
 	defer mech.Close()
 
@@ -58,31 +57,25 @@ func (opts *standaloneSignOptions) run(args []string, stdout io.Writer) error {
 
 	signature, err := signature.SignDockerManifestWithOptions(manifest, dockerReference, mech, fingerprint, &signature.SignOptions{Passphrase: passphrase})
 	if err != nil {
-		return fmt.Errorf("Error creating signature: %w", err)
+		return fmt.Errorf("Error creating signature: %v", err)
 	}
 
-	if err := os.WriteFile(opts.output, signature, 0644); err != nil {
-		return fmt.Errorf("Error writing signature to %s: %w", opts.output, err)
+	if err := ioutil.WriteFile(opts.output, signature, 0644); err != nil {
+		return fmt.Errorf("Error writing signature to %s: %v", opts.output, err)
 	}
 	return nil
 }
 
 type standaloneVerifyOptions struct {
-	publicKeyFile string
 }
 
 func standaloneVerifyCmd() *cobra.Command {
 	opts := standaloneVerifyOptions{}
 	cmd := &cobra.Command{
-		Use:   "standalone-verify MANIFEST DOCKER-REFERENCE KEY-FINGERPRINTS SIGNATURE",
+		Use:   "standalone-verify MANIFEST DOCKER-REFERENCE KEY-FINGERPRINT SIGNATURE",
 		Short: "Verify a signature using local files",
-		Long: `Verify a signature using local files
-
-KEY-FINGERPRINTS can be a comma separated list of fingerprints, or "any" if you trust all the keys in the public key file.`,
-		RunE: commandAction(opts.run),
+		RunE:  commandAction(opts.run),
 	}
-	flags := cmd.Flags()
-	flags.StringVar(&opts.publicKeyFile, "public-key-file", "", `File containing public keys. If not specified, will use local GPG keys.`)
 	adjustUsage(cmd)
 	return cmd
 }
@@ -93,51 +86,29 @@ func (opts *standaloneVerifyOptions) run(args []string, stdout io.Writer) error
 	}
 	manifestPath := args[0]
 	expectedDockerReference := args[1]
-	expectedFingerprints := strings.Split(args[2], ",")
+	expectedFingerprint := args[2]
 	signaturePath := args[3]
 
-	if opts.publicKeyFile == "" && len(expectedFingerprints) == 1 && expectedFingerprints[0] == "any" {
-		return fmt.Errorf("Cannot use any fingerprint without a public key file")
-	}
-	unverifiedManifest, err := os.ReadFile(manifestPath)
+	unverifiedManifest, err := ioutil.ReadFile(manifestPath)
 	if err != nil {
-		return fmt.Errorf("Error reading manifest from %s: %w", manifestPath, err)
+		return fmt.Errorf("Error reading manifest from %s: %v", manifestPath, err)
 	}
-	unverifiedSignature, err := os.ReadFile(signaturePath)
+	unverifiedSignature, err := ioutil.ReadFile(signaturePath)
 	if err != nil {
-		return fmt.Errorf("Error reading signature from %s: %w", signaturePath, err)
+		return fmt.Errorf("Error reading signature from %s: %v", signaturePath, err)
 	}
 
-	var mech signature.SigningMechanism
-	var publicKeyfingerprints []string
-	if opts.publicKeyFile != "" {
-		publicKeys, err := os.ReadFile(opts.publicKeyFile)
-		if err != nil {
-			return fmt.Errorf("Error reading public keys from %s: %w", opts.publicKeyFile, err)
-		}
-		mech, publicKeyfingerprints, err = signature.NewEphemeralGPGSigningMechanism(publicKeys)
-		if err != nil {
-			return fmt.Errorf("Error initializing GPG: %w", err)
-
-		}
-	} else {
-		mech, err = signature.NewGPGSigningMechanism()
-		if err != nil {
-			return fmt.Errorf("Error initializing GPG: %w", err)
-		}
+	mech, err := signature.NewGPGSigningMechanism()
+	if err != nil {
+		return fmt.Errorf("Error initializing GPG: %v", err)
 	}
 	defer mech.Close()
-
-	if len(expectedFingerprints) == 1 && expectedFingerprints[0] == "any" {
-		expectedFingerprints = publicKeyfingerprints
-	}
-
-	sig, verificationFingerprint, err := signature.VerifyImageManifestSignatureUsingKeyIdentityList(unverifiedSignature, unverifiedManifest, expectedDockerReference, mech, expectedFingerprints)
+	sig, err := signature.VerifyDockerManifestSignature(unverifiedSignature, unverifiedManifest, expectedDockerReference, mech, expectedFingerprint)
 	if err != nil {
-		return fmt.Errorf("Error verifying signature: %w", err)
+		return fmt.Errorf("Error verifying signature: %v", err)
 	}
 
-	fmt.Fprintf(stdout, "Signature verified using fingerprint %s, digest %s\n", verificationFingerprint, sig.DockerManifestDigest)
+	fmt.Fprintf(stdout, "Signature verified, digest %s\n", sig.DockerManifestDigest)
 	return nil
 }
 
@@ -168,9 +139,9 @@ func (opts *untrustedSignatureDumpOptions) run(args []string, stdout io.Writer)
 	}
 	untrustedSignaturePath := args[0]
 
-	untrustedSignature, err := os.ReadFile(untrustedSignaturePath)
+	untrustedSignature, err := ioutil.ReadFile(untrustedSignaturePath)
 	if err != nil {
-		return fmt.Errorf("Error reading untrusted signature from %s: %w", untrustedSignaturePath, err)
+		return fmt.Errorf("Error reading untrusted signature from %s: %v", untrustedSignaturePath, err)
 	}
 
 	untrustedInfo, err := signature.GetUntrustedSignatureInformationWithoutVerifying(untrustedSignature)

cmd/skopeo/signing_test.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"encoding/json"
+	"io/ioutil"
 	"os"
 	"testing"
 	"time"
@@ -24,8 +25,9 @@ const (
 // Test that results of runSkopeo failed with nothing on stdout, and substring
 // within the error message.
 func assertTestFailed(t *testing.T, stdout string, err error, substring string) {
-	assert.ErrorContains(t, err, substring)
+	assert.Error(t, err)
 	assert.Empty(t, stdout)
+	assert.Contains(t, err.Error(), substring)
 }
 
 func TestStandaloneSign(t *testing.T) {
@@ -38,7 +40,8 @@ func TestStandaloneSign(t *testing.T) {
 
 	manifestPath := "fixtures/image.manifest.json"
 	dockerReference := "testing/manifest"
-	t.Setenv("GNUPGHOME", "fixtures")
+	os.Setenv("GNUPGHOME", "fixtures")
+	defer os.Unsetenv("GNUPGHOME")
 
 	// Invalid command-line arguments
 	for _, args := range [][]string{
@@ -75,7 +78,7 @@ func TestStandaloneSign(t *testing.T) {
 	assertTestFailed(t, out, err, "/dev/full")
 
 	// Success
-	sigOutput, err := os.CreateTemp("", "sig")
+	sigOutput, err := ioutil.TempFile("", "sig")
 	require.NoError(t, err)
 	defer os.Remove(sigOutput.Name())
 	out, err = runSkopeo("standalone-sign", "-o", sigOutput.Name(),
@@ -83,9 +86,9 @@ func TestStandaloneSign(t *testing.T) {
 	require.NoError(t, err)
 	assert.Empty(t, out)
 
-	sig, err := os.ReadFile(sigOutput.Name())
+	sig, err := ioutil.ReadFile(sigOutput.Name())
 	require.NoError(t, err)
-	manifest, err := os.ReadFile(manifestPath)
+	manifest, err := ioutil.ReadFile(manifestPath)
 	require.NoError(t, err)
 	mech, err = signature.NewGPGSigningMechanism()
 	require.NoError(t, err)
@@ -100,7 +103,8 @@ func TestStandaloneVerify(t *testing.T) {
 	manifestPath := "fixtures/image.manifest.json"
 	signaturePath := "fixtures/image.signature"
 	dockerReference := "testing/manifest"
-	t.Setenv("GNUPGHOME", "fixtures")
+	os.Setenv("GNUPGHOME", "fixtures")
+	defer os.Unsetenv("GNUPGHOME")
 
 	// Invalid command-line arguments
 	for _, args := range [][]string{
@@ -127,36 +131,11 @@ func TestStandaloneVerify(t *testing.T) {
 		dockerReference, fixturesTestKeyFingerprint, "fixtures/corrupt.signature")
 	assertTestFailed(t, out, err, "Error verifying signature")
 
-	// Error using any without a public key file
-	out, err = runSkopeo("standalone-verify", manifestPath,
-		dockerReference, "any", signaturePath)
-	assertTestFailed(t, out, err, "Cannot use any fingerprint without a public key file")
-
 	// Success
 	out, err = runSkopeo("standalone-verify", manifestPath,
 		dockerReference, fixturesTestKeyFingerprint, signaturePath)
 	assert.NoError(t, err)
-	assert.Equal(t, "Signature verified using fingerprint "+fixturesTestKeyFingerprint+", digest "+fixturesTestImageManifestDigest.String()+"\n", out)
-
-	// Using multiple fingerprints
-	out, err = runSkopeo("standalone-verify", manifestPath,
-		dockerReference, "0123456789ABCDEF0123456789ABCDEF01234567,"+fixturesTestKeyFingerprint+",DEADBEEFDEADBEEFDEADBEEFDEADBEEFDEADBEEF", signaturePath)
-	assert.NoError(t, err)
-	assert.Equal(t, "Signature verified using fingerprint "+fixturesTestKeyFingerprint+", digest "+fixturesTestImageManifestDigest.String()+"\n", out)
-
-	// Using a public key file
-	t.Setenv("GNUPGHOME", "")
-	out, err = runSkopeo("standalone-verify", "--public-key-file", "fixtures/pubring.gpg", manifestPath,
-		dockerReference, fixturesTestKeyFingerprint, signaturePath)
-	assert.NoError(t, err)
-	assert.Equal(t, "Signature verified using fingerprint "+fixturesTestKeyFingerprint+", digest "+fixturesTestImageManifestDigest.String()+"\n", out)
-
-	// Using a public key file matching any public key
-	t.Setenv("GNUPGHOME", "")
-	out, err = runSkopeo("standalone-verify", "--public-key-file", "fixtures/pubring.gpg", manifestPath,
-		dockerReference, "any", signaturePath)
-	assert.NoError(t, err)
-	assert.Equal(t, "Signature verified using fingerprint "+fixturesTestKeyFingerprint+", digest "+fixturesTestImageManifestDigest.String()+"\n", out)
+	assert.Equal(t, "Signature verified, digest "+fixturesTestImageManifestDigest.String()+"\n", out)
 }
 
 func TestUntrustedSignatureDump(t *testing.T) {

cmd/skopeo/sync.go

@@ -2,58 +2,48 @@ package main
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"io"
-	"io/fs"
+	"io/ioutil"
 	"os"
 	"path"
 	"path/filepath"
 	"regexp"
-	"slices"
 	"strings"
 
-	"github.com/Masterminds/semver/v3"
 	commonFlag "github.com/containers/common/pkg/flag"
 	"github.com/containers/common/pkg/retry"
 	"github.com/containers/image/v5/copy"
 	"github.com/containers/image/v5/directory"
 	"github.com/containers/image/v5/docker"
 	"github.com/containers/image/v5/docker/reference"
-	"github.com/containers/image/v5/manifest"
 	"github.com/containers/image/v5/pkg/cli"
-	"github.com/containers/image/v5/pkg/cli/sigstore"
-	"github.com/containers/image/v5/signature/signer"
 	"github.com/containers/image/v5/transports"
 	"github.com/containers/image/v5/types"
 	"github.com/opencontainers/go-digest"
+	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
-	"gopkg.in/yaml.v3"
+	"gopkg.in/yaml.v2"
 )
 
 // syncOptions contains information retrieved from the skopeo sync command line.
 type syncOptions struct {
-	global                   *globalOptions // Global (not command dependent) skopeo options
-	deprecatedTLSVerify      *deprecatedTLSVerifyOption
-	srcImage                 *imageOptions     // Source image options
-	destImage                *imageDestOptions // Destination image options
-	retryOpts                *retry.Options
-	removeSignatures         bool                      // Do not copy signatures from the source image
-	signByFingerprint        string                    // Sign the image using a GPG key with the specified fingerprint
-	signBySigstoreParamFile  string                    // Sign the image using a sigstore signature per configuration in a param file
-	signBySigstorePrivateKey string                    // Sign the image using a sigstore private key
-	signPassphraseFile       string                    // Path pointing to a passphrase file when signing
-	format                   commonFlag.OptionalString // Force conversion of the image to a specified format
-	source                   string                    // Source repository name
-	destination              string                    // Destination registry name
-	digestFile               string                    // Write digest to this file
-	scoped                   bool                      // When true, namespace copied images at destination using the source repository name
-	all                      bool                      // Copy all of the images if an image in the source is a list
-	dryRun                   bool                      // Don't actually copy anything, just output what it would have done
-	preserveDigests          bool                      // Preserve digests during sync
-	keepGoing                bool                      // Whether or not to abort the sync if there are any errors during syncing the images
-	appendSuffix             string                    // Suffix to append to destination image tag
+	global              *globalOptions // Global (not command dependent) skopeo options
+	deprecatedTLSVerify *deprecatedTLSVerifyOption
+	srcImage            *imageOptions     // Source image options
+	destImage           *imageDestOptions // Destination image options
+	retryOpts           *retry.RetryOptions
+	removeSignatures    bool                      // Do not copy signatures from the source image
+	signByFingerprint   string                    // Sign the image using a GPG key with the specified fingerprint
+	signPassphraseFile  string                    // Path pointing to a passphrase file when signing
+	format              commonFlag.OptionalString // Force conversion of the image to a specified format
+	source              string                    // Source repository name
+	destination         string                    // Destination registry name
+	scoped              bool                      // When true, namespace copied images at destination using the source repository name
+	all                 bool                      // Copy all of the images if an image in the source is a list
+	preserveDigests     bool                      // Preserve digests during sync
+	keepGoing           bool                      // Whether or not to abort the sync if there are any errors during syncing the images
 }
 
 // repoDescriptor contains information of a single repository used as a sync source.
@@ -74,7 +64,6 @@ type tlsVerifyConfig struct {
 type registrySyncConfig struct {
 	Images           map[string][]string    // Images map images name to slices with the images' references (tags, digests)
 	ImagesByTagRegex map[string]string      `yaml:"images-by-tag-regex"` // Images map images name to regular expression with the images' tags
-	ImagesBySemver   map[string]string      `yaml:"images-by-semver"`    // ImagesBySemver maps a repository to a semver constraint (e.g. '>=3.14') to match images' tags to
 	Credentials      types.DockerAuthConfig // Username and password used to authenticate with the registry
 	TLSVerify        tlsVerifyConfig        `yaml:"tls-verify"` // TLS verification mode (enabled by default)
 	CertDir          string                 `yaml:"cert-dir"`   // Path to the TLS certificates of the registry
@@ -115,17 +104,12 @@ See skopeo-sync(1) for details.
 	flags := cmd.Flags()
 	flags.BoolVar(&opts.removeSignatures, "remove-signatures", false, "Do not copy signatures from SOURCE images")
 	flags.StringVar(&opts.signByFingerprint, "sign-by", "", "Sign the image using a GPG key with the specified `FINGERPRINT`")
-	flags.StringVar(&opts.signBySigstoreParamFile, "sign-by-sigstore", "", "Sign the image using a sigstore parameter file at `PATH`")
-	flags.StringVar(&opts.signBySigstorePrivateKey, "sign-by-sigstore-private-key", "", "Sign the image using a sigstore private key at `PATH`")
 	flags.StringVar(&opts.signPassphraseFile, "sign-passphrase-file", "", "File that contains a passphrase for the --sign-by key")
 	flags.VarP(commonFlag.NewOptionalStringValue(&opts.format), "format", "f", `MANIFEST TYPE (oci, v2s1, or v2s2) to use when syncing image(s) to a destination (default is manifest type of source, with fallbacks)`)
 	flags.StringVarP(&opts.source, "src", "s", "", "SOURCE transport type")
 	flags.StringVarP(&opts.destination, "dest", "d", "", "DESTINATION transport type")
 	flags.BoolVar(&opts.scoped, "scoped", false, "Images at DESTINATION are prefix using the full source image path as scope")
-	flags.StringVar(&opts.appendSuffix, "append-suffix", "", "String to append to DESTINATION tags")
-	flags.StringVar(&opts.digestFile, "digestfile", "", "Write the digests and Image References of the resulting images to the specified file, separated by newlines")
 	flags.BoolVarP(&opts.all, "all", "a", false, "Copy all images if SOURCE-IMAGE is a list")
-	flags.BoolVar(&opts.dryRun, "dry-run", false, "Run without actually copying data")
 	flags.BoolVar(&opts.preserveDigests, "preserve-digests", false, "Preserve digests of images and lists")
 	flags.BoolVarP(&opts.keepGoing, "keep-going", "", false, "Do not abort the sync if any image copy fails")
 	flags.AddFlagSet(&sharedFlags)
@@ -137,12 +121,12 @@ See skopeo-sync(1) for details.
 }
 
 // UnmarshalYAML is the implementation of the Unmarshaler interface method
-// for the tlsVerifyConfig type.
+// method for the tlsVerifyConfig type.
 // It unmarshals the 'tls-verify' YAML key so that, when they key is not
 // specified, tls verification is enforced.
-func (tls *tlsVerifyConfig) UnmarshalYAML(value *yaml.Node) error {
+func (tls *tlsVerifyConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	var verify bool
-	if err := value.Decode(&verify); err != nil {
+	if err := unmarshal(&verify); err != nil {
 		return err
 	}
 
@@ -154,13 +138,13 @@ func (tls *tlsVerifyConfig) UnmarshalYAML(value *yaml.Node) error {
 // It returns a new unmarshaled sourceConfig object and any error encountered.
 func newSourceConfig(yamlFile string) (sourceConfig, error) {
 	var cfg sourceConfig
-	source, err := os.ReadFile(yamlFile)
+	source, err := ioutil.ReadFile(yamlFile)
 	if err != nil {
 		return cfg, err
 	}
 	err = yaml.Unmarshal(source, &cfg)
 	if err != nil {
-		return cfg, fmt.Errorf("Failed to unmarshal %q: %w", yamlFile, err)
+		return cfg, errors.Wrapf(err, "Failed to unmarshal %q", yamlFile)
 	}
 	return cfg, nil
 }
@@ -172,7 +156,7 @@ func parseRepositoryReference(input string) (reference.Named, error) {
 		return nil, err
 	}
 	if !reference.IsNameOnly(ref) {
-		return nil, errors.New("input names a reference, not a repository")
+		return nil, errors.Errorf("input names a reference, not a repository")
 	}
 	return ref, nil
 }
@@ -190,24 +174,24 @@ func destinationReference(destination string, transport string) (types.ImageRefe
 	case directory.Transport.Name():
 		_, err := os.Stat(destination)
 		if err == nil {
-			return nil, fmt.Errorf("Refusing to overwrite destination directory %q", destination)
+			return nil, errors.Errorf("Refusing to overwrite destination directory %q", destination)
 		}
 		if !os.IsNotExist(err) {
-			return nil, fmt.Errorf("Destination directory could not be used: %w", err)
+			return nil, errors.Wrap(err, "Destination directory could not be used")
 		}
 		// the directory holding the image must be created here
 		if err = os.MkdirAll(destination, 0755); err != nil {
-			return nil, fmt.Errorf("Error creating directory for image %s: %w", destination, err)
+			return nil, errors.Wrapf(err, "Error creating directory for image %s", destination)
 		}
 		imageTransport = directory.Transport
 	default:
-		return nil, fmt.Errorf("%q is not a valid destination transport", transport)
+		return nil, errors.Errorf("%q is not a valid destination transport", transport)
 	}
 	logrus.Debugf("Destination for transport %q: %s", transport, destination)
 
 	destRef, err := imageTransport.ParseReference(destination)
 	if err != nil {
-		return nil, fmt.Errorf("Cannot obtain a valid image reference for transport %q and reference %q: %w", imageTransport.Name(), destination, err)
+		return nil, errors.Wrapf(err, "Cannot obtain a valid image reference for transport %q and reference %q", imageTransport.Name(), destination)
 	}
 
 	return destRef, nil
@@ -227,8 +211,16 @@ func getImageTags(ctx context.Context, sysCtx *types.SystemContext, repoRef refe
 		return nil, err // Should never happen for a reference with tag and no digest
 	}
 	tags, err := docker.GetRepositoryTags(ctx, sysCtx, dockerRef)
-	if err != nil {
-		return nil, fmt.Errorf("Error determining repository tags for repo %s: %w", name, err)
+
+	switch err := err.(type) {
+	case nil:
+		break
+	case docker.ErrUnauthorizedForCredentials:
+		// Some registries may decide to block the "list all tags" endpoint.
+		// Gracefully allow the sync to continue in this case.
+		logrus.Warnf("Registry disallows tag list retrieval: %s", err)
+	default:
+		return tags, errors.Wrapf(err, "Error determining repository tags for image %s", name)
 	}
 
 	return tags, nil
@@ -248,15 +240,11 @@ func imagesToCopyFromRepo(sys *types.SystemContext, repoRef reference.Named) ([]
 	for _, tag := range tags {
 		taggedRef, err := reference.WithTag(repoRef, tag)
 		if err != nil {
-			logrus.WithFields(logrus.Fields{
-				"repo": repoRef.Name(),
-				"tag":  tag,
-			}).Errorf("Error creating a tagged reference from registry tag list: %v", err)
-			continue
+			return nil, errors.Wrapf(err, "Error creating a reference for repository %s and tag %q", repoRef.Name(), tag)
 		}
 		ref, err := docker.NewReference(taggedRef)
 		if err != nil {
-			return nil, fmt.Errorf("Cannot obtain a valid image reference for transport %q and reference %s: %w", docker.Transport.Name(), taggedRef.String(), err)
+			return nil, errors.Wrapf(err, "Cannot obtain a valid image reference for transport %q and reference %s", docker.Transport.Name(), taggedRef.String())
 		}
 		sourceReferences = append(sourceReferences, ref)
 	}
@@ -269,15 +257,15 @@ func imagesToCopyFromRepo(sys *types.SystemContext, repoRef reference.Named) ([]
 // and any error encountered.
 func imagesToCopyFromDir(dirPath string) ([]types.ImageReference, error) {
 	var sourceReferences []types.ImageReference
-	err := filepath.WalkDir(dirPath, func(path string, d fs.DirEntry, err error) error {
+	err := filepath.Walk(dirPath, func(path string, info os.FileInfo, err error) error {
 		if err != nil {
 			return err
 		}
-		if !d.IsDir() && d.Name() == "manifest.json" {
+		if !info.IsDir() && info.Name() == "manifest.json" {
 			dirname := filepath.Dir(path)
 			ref, err := directory.Transport.ParseReference(dirname)
 			if err != nil {
-				return fmt.Errorf("Cannot obtain a valid image reference for transport %q and reference %q: %w", directory.Transport.Name(), dirname, err)
+				return errors.Wrapf(err, "Cannot obtain a valid image reference for transport %q and reference %q", directory.Transport.Name(), dirname)
 			}
 			sourceReferences = append(sourceReferences, ref)
 			return filepath.SkipDir
@@ -287,7 +275,7 @@ func imagesToCopyFromDir(dirPath string) ([]types.ImageReference, error) {
 
 	if err != nil {
 		return sourceReferences,
-			fmt.Errorf("Error walking the path %q: %w", dirPath, err)
+			errors.Wrapf(err, "Error walking the path %q", dirPath)
 	}
 
 	return sourceReferences, nil
@@ -309,14 +297,6 @@ func imagesToCopyFromRegistry(registryName string, cfg registrySyncConfig, sourc
 		serverCtx.DockerAuthConfig = &cfg.Credentials
 	}
 	var repoDescList []repoDescriptor
-
-	if len(cfg.Images) == 0 && len(cfg.ImagesByTagRegex) == 0 && len(cfg.ImagesBySemver) == 0 {
-		logrus.WithFields(logrus.Fields{
-			"registry": registryName,
-		}).Warn("No images specified for registry")
-		return repoDescList, nil
-	}
-
 	for imageName, refs := range cfg.Images {
 		repoLogger := logrus.WithFields(logrus.Fields{
 			"repo":     imageName,
@@ -381,144 +361,61 @@ func imagesToCopyFromRegistry(registryName string, cfg registrySyncConfig, sourc
 			Context:   serverCtx})
 	}
 
-	// include repository descriptors for cfg.ImagesByTagRegex
-	{
-		filterCollection, err := tagRegexFilterCollection(cfg.ImagesByTagRegex)
-		if err != nil {
-			logrus.Error(err)
-		} else {
-			additionalRepoDescList := filterSourceReferences(serverCtx, registryName, filterCollection)
-			repoDescList = append(repoDescList, additionalRepoDescList...)
-		}
-	}
-
-	// include repository descriptors for cfg.ImagesBySemver
-	{
-		filterCollection, err := semverFilterCollection(cfg.ImagesBySemver)
-		if err != nil {
-			logrus.Error(err)
-		} else {
-			additionalRepoDescList := filterSourceReferences(serverCtx, registryName, filterCollection)
-			repoDescList = append(repoDescList, additionalRepoDescList...)
-		}
-	}
-
-	return repoDescList, nil
-}
-
-// filterFunc is a function used to limit the initial set of image references
-// using tags, patterns, semver, etc.
-type filterFunc func(*logrus.Entry, types.ImageReference) bool
-
-// filterCollection is a map of repository names to filter functions.
-type filterCollection map[string]filterFunc
-
-// filterSourceReferences lists tags for images specified in the collection and
-// filters them using assigned filter functions.
-// It returns a list of repoDescriptors.
-func filterSourceReferences(sys *types.SystemContext, registryName string, collection filterCollection) []repoDescriptor {
-	var repoDescList []repoDescriptor
-	for repoName, filter := range collection {
-		logger := logrus.WithFields(logrus.Fields{
-			"repo":     repoName,
+	for imageName, tagRegex := range cfg.ImagesByTagRegex {
+		repoLogger := logrus.WithFields(logrus.Fields{
+			"repo":     imageName,
 			"registry": registryName,
 		})
-
-		repoRef, err := parseRepositoryReference(fmt.Sprintf("%s/%s", registryName, repoName))
+		repoRef, err := parseRepositoryReference(fmt.Sprintf("%s/%s", registryName, imageName))
 		if err != nil {
-			logger.Error("Error parsing repository name, skipping")
+			repoLogger.Error("Error parsing repository name, skipping")
 			logrus.Error(err)
 			continue
 		}
 
-		logger.Info("Processing repo")
+		repoLogger.Info("Processing repo")
 
 		var sourceReferences []types.ImageReference
 
-		logger.Info("Querying registry for image tags")
-		sourceReferences, err = imagesToCopyFromRepo(sys, repoRef)
+		tagReg, err := regexp.Compile(tagRegex)
 		if err != nil {
-			logger.Error("Error processing repo, skipping")
+			repoLogger.WithFields(logrus.Fields{
+				"regex": tagRegex,
+			}).Error("Error parsing regex, skipping")
 			logrus.Error(err)
 			continue
 		}
 
-		var filteredSourceReferences []types.ImageReference
-		for _, ref := range sourceReferences {
-			if filter(logger, ref) {
-				filteredSourceReferences = append(filteredSourceReferences, ref)
-			}
-		}
-
-		if len(filteredSourceReferences) == 0 {
-			logger.Warnf("No refs to sync found")
+		repoLogger.Info("Querying registry for image tags")
+		allSourceReferences, err := imagesToCopyFromRepo(serverCtx, repoRef)
+		if err != nil {
+			repoLogger.Error("Error processing repo, skipping")
+			logrus.Error(err)
 			continue
 		}
 
+		repoLogger.Infof("Start filtering using the regular expression: %v", tagRegex)
+		for _, sReference := range allSourceReferences {
+			tagged, isTagged := sReference.DockerReference().(reference.Tagged)
+			if !isTagged {
+				repoLogger.Errorf("Internal error, reference %s does not have a tag, skipping", sReference.DockerReference())
+				continue
+			}
+			if tagReg.MatchString(tagged.Tag()) {
+				sourceReferences = append(sourceReferences, sReference)
+			}
+		}
+
+		if len(sourceReferences) == 0 {
+			repoLogger.Warnf("No refs to sync found")
+			continue
+		}
 		repoDescList = append(repoDescList, repoDescriptor{
-			ImageRefs: filteredSourceReferences,
-			Context:   sys,
-		})
-	}
-	return repoDescList
-}
-
-// tagRegexFilterCollection converts a map of (repository name, tag regex) pairs
-// into a filterCollection, which is a map of (repository name, filter function)
-// pairs.
-func tagRegexFilterCollection(collection map[string]string) (filterCollection, error) {
-	filters := filterCollection{}
-
-	for repoName, tagRegex := range collection {
-		pattern, err := regexp.Compile(tagRegex)
-		if err != nil {
-			return nil, err
-		}
-
-		f := func(logger *logrus.Entry, sourceReference types.ImageReference) bool {
-			tagged, isTagged := sourceReference.DockerReference().(reference.Tagged)
-			if !isTagged {
-				logger.Errorf("Internal error, reference %s does not have a tag, skipping", sourceReference.DockerReference())
-				return false
-			}
-			return pattern.MatchString(tagged.Tag())
-		}
-		filters[repoName] = f
+			ImageRefs: sourceReferences,
+			Context:   serverCtx})
 	}
 
-	return filters, nil
-}
-
-// semverFilterCollection converts a map of (repository name, array of semver constraints) pairs
-// into a filterCollection, which is a map of (repository name, filter function)
-// pairs.
-func semverFilterCollection(collection map[string]string) (filterCollection, error) {
-	filters := filterCollection{}
-
-	for repoName, constraintString := range collection {
-		constraint, err := semver.NewConstraint(constraintString)
-		if err != nil {
-			return nil, err
-		}
-
-		f := func(logger *logrus.Entry, sourceReference types.ImageReference) bool {
-			tagged, isTagged := sourceReference.DockerReference().(reference.Tagged)
-			if !isTagged {
-				logger.Errorf("Internal error, reference %s does not have a tag, skipping", sourceReference.DockerReference())
-				return false
-			}
-			tagVersion, err := semver.NewVersion(tagged.Tag())
-			if err != nil {
-				logger.Tracef("Tag %q cannot be parsed as semver, skipping", tagged.Tag())
-				return false
-			}
-			return constraint.Check(tagVersion)
-		}
-
-		filters[repoName] = f
-	}
-
-	return filters, nil
+	return repoDescList, nil
 }
 
 // imagesToCopy retrieves all the images to copy from a specified sync source
@@ -536,7 +433,7 @@ func imagesToCopy(source string, transport string, sourceCtx *types.SystemContex
 		}
 		named, err := reference.ParseNormalizedNamed(source) // May be a repository or an image.
 		if err != nil {
-			return nil, fmt.Errorf("Cannot obtain a valid image reference for transport %q and reference %q: %w", docker.Transport.Name(), source, err)
+			return nil, errors.Wrapf(err, "Cannot obtain a valid image reference for transport %q and reference %q", docker.Transport.Name(), source)
 		}
 		imageTagged := !reference.IsNameOnly(named)
 		logrus.WithFields(logrus.Fields{
@@ -546,7 +443,7 @@ func imagesToCopy(source string, transport string, sourceCtx *types.SystemContex
 		if imageTagged {
 			srcRef, err := docker.NewReference(named)
 			if err != nil {
-				return nil, fmt.Errorf("Cannot obtain a valid image reference for transport %q and reference %q: %w", docker.Transport.Name(), named.String(), err)
+				return nil, errors.Wrapf(err, "Cannot obtain a valid image reference for transport %q and reference %q", docker.Transport.Name(), named.String())
 			}
 			desc.ImageRefs = []types.ImageReference{srcRef}
 		} else {
@@ -555,7 +452,7 @@ func imagesToCopy(source string, transport string, sourceCtx *types.SystemContex
 				return descriptors, err
 			}
 			if len(desc.ImageRefs) == 0 {
-				return descriptors, fmt.Errorf("No images to sync found in %q", source)
+				return descriptors, errors.Errorf("No images to sync found in %q", source)
 			}
 		}
 		descriptors = append(descriptors, desc)
@@ -566,7 +463,7 @@ func imagesToCopy(source string, transport string, sourceCtx *types.SystemContex
 		}
 
 		if _, err := os.Stat(source); err != nil {
-			return descriptors, fmt.Errorf("Invalid source directory specified: %w", err)
+			return descriptors, errors.Wrap(err, "Invalid source directory specified")
 		}
 		desc.DirBasePath = source
 		var err error
@@ -575,7 +472,7 @@ func imagesToCopy(source string, transport string, sourceCtx *types.SystemContex
 			return descriptors, err
 		}
 		if len(desc.ImageRefs) == 0 {
-			return descriptors, fmt.Errorf("No images to sync found in %q", source)
+			return descriptors, errors.Errorf("No images to sync found in %q", source)
 		}
 		descriptors = append(descriptors, desc)
 
@@ -585,9 +482,16 @@ func imagesToCopy(source string, transport string, sourceCtx *types.SystemContex
 			return descriptors, err
 		}
 		for registryName, registryConfig := range cfg {
+			if len(registryConfig.Images) == 0 && len(registryConfig.ImagesByTagRegex) == 0 {
+				logrus.WithFields(logrus.Fields{
+					"registry": registryName,
+				}).Warn("No images specified for registry")
+				continue
+			}
+
 			descs, err := imagesToCopyFromRegistry(registryName, registryConfig, *sourceCtx)
 			if err != nil {
-				return descriptors, fmt.Errorf("Failed to retrieve list of images from registry %q: %w", registryName, err)
+				return descriptors, errors.Wrapf(err, "Failed to retrieve list of images from registry %q", registryName)
 			}
 			descriptors = append(descriptors, descs...)
 		}
@@ -596,7 +500,7 @@ func imagesToCopy(source string, transport string, sourceCtx *types.SystemContex
 	return descriptors, nil
 }
 
-func (opts *syncOptions) run(args []string, stdout io.Writer) (retErr error) {
+func (opts *syncOptions) run(args []string, stdout io.Writer) error {
 	if len(args) != 2 {
 		return errorShouldDisplayUsage{errors.New("Exactly two arguments expected")}
 	}
@@ -604,35 +508,38 @@ func (opts *syncOptions) run(args []string, stdout io.Writer) (retErr error) {
 
 	policyContext, err := opts.global.getPolicyContext()
 	if err != nil {
-		return fmt.Errorf("Error loading trust policy: %w", err)
+		return errors.Wrapf(err, "Error loading trust policy")
 	}
-	defer func() {
-		if err := policyContext.Destroy(); err != nil {
-			retErr = noteCloseFailure(retErr, "tearing down policy context", err)
-		}
-	}()
+	defer policyContext.Destroy()
 
 	// validate source and destination options
+	contains := func(val string, list []string) (_ bool) {
+		for _, l := range list {
+			if l == val {
+				return true
+			}
+		}
+		return
+	}
+
 	if len(opts.source) == 0 {
 		return errors.New("A source transport must be specified")
 	}
-	if !slices.Contains([]string{docker.Transport.Name(), directory.Transport.Name(), "yaml"}, opts.source) {
-		return fmt.Errorf("%q is not a valid source transport", opts.source)
+	if !contains(opts.source, []string{docker.Transport.Name(), directory.Transport.Name(), "yaml"}) {
+		return errors.Errorf("%q is not a valid source transport", opts.source)
 	}
 
 	if len(opts.destination) == 0 {
 		return errors.New("A destination transport must be specified")
 	}
-	if !slices.Contains([]string{docker.Transport.Name(), directory.Transport.Name()}, opts.destination) {
-		return fmt.Errorf("%q is not a valid destination transport", opts.destination)
+	if !contains(opts.destination, []string{docker.Transport.Name(), directory.Transport.Name()}) {
+		return errors.Errorf("%q is not a valid destination transport", opts.destination)
 	}
 
 	if opts.source == opts.destination && opts.source == directory.Transport.Name() {
 		return errors.New("sync from 'dir' to 'dir' not implemented, consider using rsync instead")
 	}
 
-	opts.destImage.warnAboutIneffectiveOptions(transports.Get(opts.destination))
-
 	imageListSelection := copy.CopySystemImage
 	if opts.all {
 		imageListSelection = copy.CopyAllImages
@@ -656,7 +563,7 @@ func (opts *syncOptions) run(args []string, stdout io.Writer) (retErr error) {
 
 	sourceArg := args[0]
 	var srcRepoList []repoDescriptor
-	if err = retry.IfNecessary(ctx, func() error {
+	if err = retry.RetryIfNecessary(ctx, func() error {
 		srcRepoList, err = imagesToCopy(sourceArg, opts.source, sourceCtx)
 		return err
 	}, opts.retryOpts); err != nil {
@@ -669,51 +576,15 @@ func (opts *syncOptions) run(args []string, stdout io.Writer) (retErr error) {
 		return err
 	}
 
-	// c/image/copy.Image does allow creating both simple signing and sigstore signatures simultaneously,
-	// with independent passphrases, but that would make the CLI probably too confusing.
-	// For now, use the passphrase with either, but only one of them.
-	if opts.signPassphraseFile != "" && opts.signByFingerprint != "" && opts.signBySigstorePrivateKey != "" {
-		return fmt.Errorf("Only one of --sign-by and sign-by-sigstore-private-key can be used with sign-passphrase-file")
+	passphrase, err := cli.ReadPassphraseFile(opts.signPassphraseFile)
+	if err != nil {
+		return err
 	}
-	var passphrase string
-	if opts.signPassphraseFile != "" {
-		p, err := cli.ReadPassphraseFile(opts.signPassphraseFile)
-		if err != nil {
-			return err
-		}
-		passphrase = p
-	} else if opts.signBySigstorePrivateKey != "" {
-		p, err := promptForPassphrase(opts.signBySigstorePrivateKey, os.Stdin, os.Stdout)
-		if err != nil {
-			return err
-		}
-		passphrase = p
-	}
-
-	var signers []*signer.Signer
-	if opts.signBySigstoreParamFile != "" {
-		signer, err := sigstore.NewSignerFromParameterFile(opts.signBySigstoreParamFile, &sigstore.Options{
-			PrivateKeyPassphrasePrompt: func(keyFile string) (string, error) {
-				return promptForPassphrase(keyFile, os.Stdin, os.Stdout)
-			},
-			Stdin:  os.Stdin,
-			Stdout: stdout,
-		})
-		if err != nil {
-			return fmt.Errorf("Error using --sign-by-sigstore: %w", err)
-		}
-		defer signer.Close()
-		signers = append(signers, signer)
-	}
-
 	options := copy.Options{
 		RemoveSignatures:                      opts.removeSignatures,
-		Signers:                               signers,
 		SignBy:                                opts.signByFingerprint,
 		SignPassphrase:                        passphrase,
-		SignBySigstorePrivateKeyFile:          opts.signBySigstorePrivateKey,
-		SignSigstorePrivateKeyPassphrase:      []byte(passphrase),
-		ReportWriter:                          stdout,
+		ReportWriter:                          os.Stdout,
 		DestinationCtx:                        destinationCtx,
 		ImageListSelection:                    imageListSelection,
 		PreserveDigests:                       opts.preserveDigests,
@@ -722,28 +593,10 @@ func (opts *syncOptions) run(args []string, stdout io.Writer) (retErr error) {
 	}
 	errorsPresent := false
 	imagesNumber := 0
-	if opts.dryRun {
-		logrus.Warn("Running in dry-run mode")
-	}
-
-	var digestFile *os.File
-	if opts.digestFile != "" && !opts.dryRun {
-		digestFile, err = os.OpenFile(opts.digestFile, os.O_TRUNC|os.O_CREATE|os.O_WRONLY, 0644)
-		if err != nil {
-			return fmt.Errorf("Error creating digest file: %w", err)
-		}
-		defer func() {
-			if err := digestFile.Close(); err != nil {
-				retErr = noteCloseFailure(retErr, "closing digest file", err)
-			}
-		}()
-	}
-
 	for _, srcRepo := range srcRepoList {
 		options.SourceCtx = srcRepo.Context
 		for counter, ref := range srcRepo.ImageRefs {
 			var destSuffix string
-			var manifestBytes []byte
 			switch ref.Transport() {
 			case docker.Transport:
 				// docker -> dir or docker -> docker
@@ -761,54 +614,34 @@ func (opts *syncOptions) run(args []string, stdout io.Writer) (retErr error) {
 				destSuffix = path.Base(destSuffix)
 			}
 
-			destRef, err := destinationReference(path.Join(destination, destSuffix)+opts.appendSuffix, opts.destination)
+			destRef, err := destinationReference(path.Join(destination, destSuffix), opts.destination)
 			if err != nil {
 				return err
 			}
 
-			fromToFields := logrus.Fields{
+			logrus.WithFields(logrus.Fields{
 				"from": transports.ImageName(ref),
 				"to":   transports.ImageName(destRef),
-			}
-			if opts.dryRun {
-				logrus.WithFields(fromToFields).Infof("Would have copied image ref %d/%d", counter+1, len(srcRepo.ImageRefs))
-			} else {
-				logrus.WithFields(fromToFields).Infof("Copying image ref %d/%d", counter+1, len(srcRepo.ImageRefs))
-				if err = retry.IfNecessary(ctx, func() error {
-					manifestBytes, err = copy.Image(ctx, policyContext, destRef, ref, &options)
-					return err
-				}, opts.retryOpts); err != nil {
-					if !opts.keepGoing {
-						return fmt.Errorf("Error copying ref %q: %w", transports.ImageName(ref), err)
-					}
-					// log the error, keep a note that there was a failure and move on to the next
-					// image ref
-					errorsPresent = true
-					logrus.WithError(err).Errorf("Error copying ref %q", transports.ImageName(ref))
-					continue
-				}
-				// Ensure that we log the manifest digest to a file only if the copy operation was successful
-				if opts.digestFile != "" {
-					manifestDigest, err := manifest.Digest(manifestBytes)
-					if err != nil {
-						return err
-					}
-					outputStr := fmt.Sprintf("%s %s", manifestDigest.String(), transports.ImageName(destRef))
-					if _, err = digestFile.WriteString(outputStr + "\n"); err != nil {
-						return fmt.Errorf("Failed to write digest to file %q: %w", opts.digestFile, err)
-					}
-				}
-			}
+			}).Infof("Copying image ref %d/%d", counter+1, len(srcRepo.ImageRefs))
 
+			if err = retry.RetryIfNecessary(ctx, func() error {
+				_, err = copy.Image(ctx, policyContext, destRef, ref, &options)
+				return err
+			}, opts.retryOpts); err != nil {
+				if !opts.keepGoing {
+					return errors.Wrapf(err, "Error copying ref %q", transports.ImageName(ref))
+				}
+				// log the error, keep a note that there was a failure and move on to the next
+				// image ref
+				errorsPresent = true
+				logrus.WithError(err).Errorf("Error copying ref %q", transports.ImageName(ref))
+				continue
+			}
 			imagesNumber++
 		}
 	}
 
-	if opts.dryRun {
-		logrus.Infof("Would have synced %d images from %d sources", imagesNumber, len(srcRepoList))
-	} else {
-		logrus.Infof("Synced %d images from %d sources", imagesNumber, len(srcRepoList))
-	}
+	logrus.Infof("Synced %d images from %d sources", imagesNumber, len(srcRepoList))
 	if !errorsPresent {
 		return nil
 	}

cmd/skopeo/sync_test.go

@@ -1,46 +0,0 @@
-package main
-
-import (
-	"testing"
-
-	"github.com/containers/image/v5/types"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-	"gopkg.in/yaml.v3"
-)
-
-var _ yaml.Unmarshaler = (*tlsVerifyConfig)(nil)
-
-func TestTLSVerifyConfig(t *testing.T) {
-	type container struct { // An example of a larger config file
-		TLSVerify tlsVerifyConfig `yaml:"tls-verify"`
-	}
-
-	for _, c := range []struct {
-		input    string
-		expected tlsVerifyConfig
-	}{
-		{
-			input:    `tls-verify: true`,
-			expected: tlsVerifyConfig{skip: types.OptionalBoolFalse},
-		},
-		{
-			input:    `tls-verify: false`,
-			expected: tlsVerifyConfig{skip: types.OptionalBoolTrue},
-		},
-		{
-			input:    ``, // No value
-			expected: tlsVerifyConfig{skip: types.OptionalBoolUndefined},
-		},
-	} {
-		config := container{}
-		err := yaml.Unmarshal([]byte(c.input), &config)
-		require.NoError(t, err, c.input)
-		assert.Equal(t, c.expected, config.TLSVerify, c.input)
-	}
-
-	// Invalid input
-	config := container{}
-	err := yaml.Unmarshal([]byte(`tls-verify: "not a valid bool"`), &config)
-	assert.Error(t, err)
-}

cmd/skopeo/unshare.go

@@ -3,6 +3,6 @@
 
 package main
 
-func reexecIfNecessaryForImages(_ ...string) error {
+func reexecIfNecessaryForImages(inputImageNames ...string) error {
 	return nil
 }

cmd/skopeo/unshare_linux.go

@@ -1,12 +1,10 @@
 package main
 
 import (
-	"fmt"
-	"slices"
-
 	"github.com/containers/image/v5/transports/alltransports"
 	"github.com/containers/storage/pkg/unshare"
-	"github.com/moby/sys/capability"
+	"github.com/pkg/errors"
+	"github.com/syndtr/gocapability/capability"
 )
 
 var neededCapabilities = []capability.Cap{
@@ -22,32 +20,29 @@ func maybeReexec() error {
 	// With Skopeo we need only the subset of the root capabilities necessary
 	// for pulling an image to the storage.  Do not attempt to create a namespace
 	// if we already have the capabilities we need.
-	capabilities, err := capability.NewPid2(0)
+	capabilities, err := capability.NewPid(0)
 	if err != nil {
-		return fmt.Errorf("error reading the current capabilities sets: %w", err)
+		return errors.Wrapf(err, "error reading the current capabilities sets")
 	}
-	if err := capabilities.Load(); err != nil {
-		return fmt.Errorf("error loading the current capabilities sets: %w", err)
-	}
-	if slices.ContainsFunc(neededCapabilities, func(cap capability.Cap) bool {
-		return !capabilities.Get(capability.EFFECTIVE, cap)
-	}) {
-		// We miss a capability we need, create a user namespaces
-		unshare.MaybeReexecUsingUserNamespace(true)
-		return nil
+	for _, cap := range neededCapabilities {
+		if !capabilities.Get(capability.EFFECTIVE, cap) {
+			// We miss a capability we need, create a user namespaces
+			unshare.MaybeReexecUsingUserNamespace(true)
+			return nil
+		}
 	}
 	return nil
 }
 
 func reexecIfNecessaryForImages(imageNames ...string) error {
 	// Check if container-storage is used before doing unshare
-	if slices.ContainsFunc(imageNames, func(imageName string) bool {
+	for _, imageName := range imageNames {
 		transport := alltransports.TransportFromImageName(imageName)
 		// Hard-code the storage name to avoid a reference on c/image/storage.
 		// See https://github.com/containers/skopeo/issues/771#issuecomment-563125006.
-		return transport != nil && transport.Name() == "containers-storage"
-	}) {
-		return maybeReexec()
+		if transport != nil && transport.Name() == "containers-storage" {
+			return maybeReexec()
+		}
 	}
 	return nil
 }

cmd/skopeo/utils.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -10,20 +9,15 @@ import (
 
 	commonFlag "github.com/containers/common/pkg/flag"
 	"github.com/containers/common/pkg/retry"
-	"github.com/containers/image/v5/directory"
 	"github.com/containers/image/v5/manifest"
-	ocilayout "github.com/containers/image/v5/oci/layout"
 	"github.com/containers/image/v5/pkg/compression"
-	"github.com/containers/image/v5/storage"
 	"github.com/containers/image/v5/transports/alltransports"
 	"github.com/containers/image/v5/types"
-	dockerdistributionerrcode "github.com/docker/distribution/registry/api/errcode"
-	dockerdistributionapi "github.com/docker/distribution/registry/api/v2"
 	imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
+	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
-	"golang.org/x/term"
 )
 
 // errorShouldDisplayUsage is a subtype of error used by command handlers to indicate that cli.ShowSubcommandHelp should be called.
@@ -31,27 +25,6 @@ type errorShouldDisplayUsage struct {
 	error
 }
 
-// noteCloseFailure returns (possibly-nil) err modified to account for (non-nil) closeErr.
-// The error for closeErr is annotated with description (which is not a format string)
-// Typical usage:
-//
-//	defer func() {
-//		if err := something.Close(); err != nil {
-//			returnedErr = noteCloseFailure(returnedErr, "closing something", err)
-//		}
-//	}
-func noteCloseFailure(err error, description string, closeErr error) error {
-	// We don’t accept a Closer() and close it ourselves because signature.PolicyContext has .Destroy(), not .Close().
-	// This also makes it harder for a caller to do
-	//     defer noteCloseFailure(returnedErr, …)
-	// which doesn’t use the right value of returnedErr, and doesn’t update it.
-	if err == nil {
-		return fmt.Errorf("%s: %w", description, closeErr)
-	}
-	// In this case we prioritize the primary error for use with %w; closeErr is usually less relevant, or might be a consequence of the primary error.
-	return fmt.Errorf("%w (%s: %v)", err, description, closeErr)
-}
-
 // commandAction intermediates between the RunE interface and the real handler,
 // primarily to ensure that cobra.Command is not available to the handler, which in turn
 // makes sure that the cmd.Flags() etc. flag access functions are not used,
@@ -60,9 +33,8 @@ func noteCloseFailure(err error, description string, closeErr error) error {
 func commandAction(handler func(args []string, stdout io.Writer) error) func(cmd *cobra.Command, args []string) error {
 	return func(c *cobra.Command, args []string) error {
 		err := handler(args, c.OutOrStdout())
-		var shouldDisplayUsage errorShouldDisplayUsage
-		if errors.As(err, &shouldDisplayUsage) {
-			return c.Help()
+		if _, ok := err.(errorShouldDisplayUsage); ok {
+			c.Help()
 		}
 		return err
 	}
@@ -179,8 +151,8 @@ func imageFlags(global *globalOptions, shared *sharedImageOptions, deprecatedTLS
 	return fs, opts
 }
 
-func retryFlags() (pflag.FlagSet, *retry.Options) {
-	opts := retry.Options{}
+func retryFlags() (pflag.FlagSet, *retry.RetryOptions) {
+	opts := retry.RetryOptions{}
 	fs := pflag.FlagSet{}
 	fs.IntVar(&opts.MaxRetry, "retry-times", 0, "the number of times to possibly retry")
 	return fs, &opts
@@ -249,7 +221,6 @@ func (opts *imageOptions) newSystemContext() (*types.SystemContext, error) {
 }
 
 // imageDestOptions is a superset of imageOptions specialized for image destinations.
-// Every user should call imageDestOptions.warnAboutIneffectiveOptions() as part of handling the CLI
 type imageDestOptions struct {
 	*imageOptions
 	dirForceCompression         bool                   // Compress layers when saving to the dir: transport
@@ -258,13 +229,12 @@ type imageDestOptions struct {
 	compressionFormat           string                 // Format to use for the compression
 	compressionLevel            commonFlag.OptionalInt // Level to use for the compression
 	precomputeDigests           bool                   // Precompute digests to dedup layers when saving to the docker: transport
-	imageDestFlagPrefix         string
 }
 
 // imageDestFlags prepares a collection of CLI flags writing into imageDestOptions, and the managed imageDestOptions structure.
 func imageDestFlags(global *globalOptions, shared *sharedImageOptions, deprecatedTLSVerify *deprecatedTLSVerifyOption, flagPrefix, credsOptionAlias string) (pflag.FlagSet, *imageDestOptions) {
 	genericFlags, genericOptions := imageFlags(global, shared, deprecatedTLSVerify, flagPrefix, credsOptionAlias)
-	opts := imageDestOptions{imageOptions: genericOptions, imageDestFlagPrefix: flagPrefix}
+	opts := imageDestOptions{imageOptions: genericOptions}
 	fs := pflag.FlagSet{}
 	fs.AddFlagSet(&genericFlags)
 	fs.BoolVar(&opts.dirForceCompression, flagPrefix+"compress", false, "Compress tarball image layers when saving to directory using the 'dir' transport. (default is same compression type as source)")
@@ -302,28 +272,18 @@ func (opts *imageDestOptions) newSystemContext() (*types.SystemContext, error) {
 	return ctx, err
 }
 
-// warnAboutIneffectiveOptions warns if any ineffective option was set by the user
-// Every user should call this as part of handling the CLI
-func (opts *imageDestOptions) warnAboutIneffectiveOptions(destTransport types.ImageTransport) {
-	if destTransport.Name() != directory.Transport.Name() {
-		if opts.dirForceCompression {
-			logrus.Warnf("--%s can only be used if the destination transport is 'dir'", opts.imageDestFlagPrefix+"compress")
-		}
-		if opts.dirForceDecompression {
-			logrus.Warnf("--%s can only be used if the destination transport is 'dir'", opts.imageDestFlagPrefix+"decompress")
-		}
-	}
-}
-
 func parseCreds(creds string) (string, string, error) {
 	if creds == "" {
 		return "", "", errors.New("credentials can't be empty")
 	}
-	username, password, _ := strings.Cut(creds, ":") // Sets password to "" if there is no ":"
-	if username == "" {
+	up := strings.SplitN(creds, ":", 2)
+	if len(up) == 1 {
+		return up[0], "", nil
+	}
+	if up[0] == "" {
 		return "", "", errors.New("username can't be empty")
 	}
-	return username, password, nil
+	return up[0], up[1], nil
 }
 
 func getDockerAuth(creds string) (*types.DockerAuthConfig, error) {
@@ -394,39 +354,3 @@ func adjustUsage(c *cobra.Command) {
 	c.SetUsageTemplate(usageTemplate)
 	c.DisableFlagsInUseLine = true
 }
-
-// promptForPassphrase interactively prompts for a passphrase related to privateKeyFile
-func promptForPassphrase(privateKeyFile string, stdin, stdout *os.File) (string, error) {
-	stdinFd := int(stdin.Fd())
-	if !term.IsTerminal(stdinFd) {
-		return "", fmt.Errorf("Cannot prompt for a passphrase for key %s, standard input is not a TTY", privateKeyFile)
-	}
-
-	fmt.Fprintf(stdout, "Passphrase for key %s: ", privateKeyFile)
-	passphrase, err := term.ReadPassword(stdinFd)
-	if err != nil {
-		return "", fmt.Errorf("Error reading password: %w", err)
-	}
-	fmt.Fprintf(stdout, "\n")
-	return string(passphrase), nil
-}
-
-// isNotFoundImageError heuristically attempts to determine whether an error
-// is saying the remote source couldn't find the image (as opposed to an
-// authentication error, an I/O error etc.)
-// TODO drive this into containers/image properly
-func isNotFoundImageError(err error) bool {
-	return isDockerManifestUnknownError(err) ||
-		errors.Is(err, storage.ErrNoSuchImage) ||
-		errors.Is(err, ocilayout.ImageNotFoundError{})
-}
-
-// isDockerManifestUnknownError is a copy of code from containers/image,
-// please update there first.
-func isDockerManifestUnknownError(err error) bool {
-	var ec dockerdistributionerrcode.ErrorCoder
-	if !errors.As(err, &ec) {
-		return false
-	}
-	return ec.ErrorCode() == dockerdistributionapi.ErrorCodeManifestUnknown
-}

cmd/skopeo/utils_test.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"errors"
+	"os"
 	"testing"
 
 	"github.com/containers/image/v5/manifest"
@@ -13,27 +13,6 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-func TestNoteCloseFailure(t *testing.T) {
-	const description = "description"
-
-	mainErr := errors.New("main")
-	closeErr := errors.New("closing")
-
-	// Main success, closing failed
-	res := noteCloseFailure(nil, description, closeErr)
-	require.NotNil(t, res)
-	assert.Contains(t, res.Error(), description)
-	assert.Contains(t, res.Error(), closeErr.Error())
-
-	// Both main and closing failed
-	res = noteCloseFailure(mainErr, description, closeErr)
-	require.NotNil(t, res)
-	assert.Contains(t, res.Error(), mainErr.Error())
-	assert.Contains(t, res.Error(), description)
-	assert.Contains(t, res.Error(), closeErr.Error())
-	assert.ErrorIs(t, res, mainErr)
-}
-
 // fakeGlobalOptions creates globalOptions and sets it according to flags.
 func fakeGlobalOptions(t *testing.T, flags []string) (*globalOptions, *cobra.Command) {
 	app, opts := createApp()
@@ -149,9 +128,17 @@ func TestImageDestOptionsNewSystemContext(t *testing.T) {
 		DockerRegistryUserAgent: defaultUserAgent,
 	}, res)
 
+	oldXRD, hasXRD := os.LookupEnv("REGISTRY_AUTH_FILE")
+	defer func() {
+		if hasXRD {
+			os.Setenv("REGISTRY_AUTH_FILE", oldXRD)
+		} else {
+			os.Unsetenv("REGISTRY_AUTH_FILE")
+		}
+	}()
 	authFile := "/tmp/auth.json"
 	// Make sure when REGISTRY_AUTH_FILE is set the auth file is used
-	t.Setenv("REGISTRY_AUTH_FILE", authFile)
+	os.Setenv("REGISTRY_AUTH_FILE", authFile)
 
 	// Explicitly set everything to default, except for when the default is “not present”
 	opts = fakeImageDestOptions(t, "dest-", true, []string{}, []string{
@@ -385,6 +372,7 @@ func TestParseManifestFormat(t *testing.T) {
 // since there is a shared authfile image option and a non-shared (prefixed) one, make sure the override logic
 // works correctly.
 func TestImageOptionsAuthfileOverride(t *testing.T) {
+
 	for _, testCase := range []struct {
 		flagPrefix           string
 		cmdFlags             []string

completions/bash/skopeo

@@ -0,0 +1,341 @@
+#! /bin/bash
+
+_complete_() {
+    local options_with_args=$1
+    local boolean_options="$2 -h --help"
+    local transports=$3
+
+    local option_with_args
+    for option_with_args in $options_with_args $transports
+    do
+        if [ "$option_with_args" == "$prev" ] || [ "$option_with_args" == "$cur" ]
+        then
+            return
+        fi
+    done
+
+    case "$cur" in
+        -*)
+            while IFS='' read -r line; do COMPREPLY+=("$line"); done < <(compgen -W "$boolean_options $options_with_args" -- "$cur")
+            ;;
+        *)
+            if [ -n "$transports" ]
+            then
+                compopt -o nospace
+                while IFS='' read -r line; do COMPREPLY+=("$line"); done < <(compgen -W "$transports" -- "$cur")
+            fi
+            ;;
+    esac
+}
+
+_skopeo_supported_transports() {
+    local subcommand=$1
+
+    skopeo "$subcommand" --help | grep "Supported transports" -A 1 | tail -n 1 | sed -e 's/,/:/g' -e 's/$/:/'
+}
+
+_skopeo_copy() {
+    local options_with_args="
+    --authfile
+    --src-authfile
+    --dest-authfile
+    --format -f
+    --multi-arch
+    --sign-by
+    --sign-passphrase-file
+    --src-creds --screds
+    --src-cert-dir
+    --src-tls-verify
+    --dest-creds --dcreds
+    --dest-cert-dir
+    --dest-tls-verify
+    --src-daemon-host
+    --dest-daemon-host
+    --src-registry-token
+    --dest-registry-token
+    --src-username
+    --src-password
+    --dest-username
+    --dest-password
+    "
+
+    local boolean_options="
+    --all
+    --dest-compress
+    --dest-decompress
+    --remove-signatures
+    --src-no-creds
+    --dest-no-creds
+    --dest-oci-accept-uncompressed-layers
+    --dest-precompute-digests
+    --preserve-digests
+    "
+
+    local transports
+    transports="
+    $(_skopeo_supported_transports "${FUNCNAME//"_skopeo_"/}")
+    "
+
+    _complete_ "$options_with_args" "$boolean_options" "$transports"
+}
+
+_skopeo_sync() {
+    local options_with_args="
+    --authfile
+    --dest
+    --dest-authfile
+    --dest-cert-
+    --dest-creds
+    --dest-registry-token string
+    --format
+    --retry-times
+    --sign-by
+    --sign-passphrase-file
+    --src
+    --src-authfile
+    --src-cert-dir
+    --src-creds
+    --src-registry-token
+    --src-username
+    --src-password
+    --dest-username
+    --dest-password
+    "
+
+    local boolean_options="
+    --all
+    --dest-no-creds
+    --dest-tls-verify
+    --remove-signatures
+    --scoped
+    --src-no-creds
+    --src-tls-verify
+    --keep-going
+    --preserve-digests
+    "
+
+    local transports
+    transports="
+    $(_skopeo_supported_transports "${FUNCNAME//"_skopeo_"/}")
+    "
+
+    _complete_ "$options_with_args" "$boolean_options" "$transports"
+}
+
+_skopeo_inspect() {
+     local options_with_args="
+     --authfile
+     --creds
+     --cert-dir
+     --format
+     --retry-times
+     --registry-token
+    --username
+    --password
+     "
+     local boolean_options="
+     --config
+     --raw
+     --tls-verify
+     --no-creds
+     --no-tags -n
+    "
+
+    local transports
+    transports="
+    $(_skopeo_supported_transports "${FUNCNAME//"_skopeo_"/}")
+    "
+
+    _complete_ "$options_with_args" "$boolean_options" "$transports"
+}
+
+_skopeo_standalone_sign() {
+     local options_with_args="
+       -o --output
+       --passphrase-file
+     "
+     local boolean_options="
+     "
+    _complete_ "$options_with_args" "$boolean_options"
+}
+
+_skopeo_standalone_verify() {
+     local options_with_args="
+     "
+     local boolean_options="
+     "
+    _complete_ "$options_with_args" "$boolean_options"
+}
+
+_skopeo_manifest_digest() {
+     local options_with_args="
+     "
+     local boolean_options="
+     "
+    _complete_ "$options_with_args" "$boolean_options"
+}
+
+_skopeo_delete() {
+     local options_with_args="
+     --authfile
+     --creds
+     --cert-dir
+     --registry-token
+    --username
+    --password
+     "
+     local boolean_options="
+     --tls-verify
+     --no-creds
+     "
+
+    local transports
+    transports="
+    $(_skopeo_supported_transports "${FUNCNAME//"_skopeo_"/}")
+    "
+
+    _complete_ "$options_with_args" "$boolean_options" "$transports"
+}
+
+_skopeo_layers() {
+     local options_with_args="
+       --authfile
+       --creds
+       --cert-dir
+       --registry-token
+      --username
+      --password
+     "
+     local boolean_options="
+       --tls-verify
+       --no-creds
+     "
+    _complete_ "$options_with_args" "$boolean_options"
+}
+
+_skopeo_list_repository_tags() {
+     local options_with_args="
+     --authfile
+     --creds
+     --cert-dir
+     --registry-token
+    --username
+    --password
+     "
+
+     local boolean_options="
+     --tls-verify
+     --no-creds
+     "
+    _complete_ "$options_with_args" "$boolean_options"
+}
+
+_skopeo_login() {
+    local options_with_args="
+    --authfile
+    --cert-dir
+    --password -p
+    --username -u
+    "
+
+    local boolean_options="
+    --get-login
+    --tls-verify
+    --password-stdin
+    "
+    _complete_ "$options_with_args" "$boolean_options"
+}
+
+_skopeo_logout() {
+    local options_with_args="
+    --authfile
+    "
+
+    local boolean_options="
+    --all -a
+    "
+    _complete_ "$options_with_args" "$boolean_options"
+}
+
+_skopeo_skopeo() {
+     # XXX: Changes here need to be reflected in the manually expanded
+     # string in the `case` statement below as well.
+     local options_with_args="
+       --policy
+       --registries.d
+       --override-arch
+       --override-os
+       --override-variant
+       --command-timeout
+       --tmpdir
+     "
+     local boolean_options="
+       --insecure-policy
+       --debug
+       --version -v
+       --help -h
+     "
+
+     local commands=(
+       copy
+       delete
+       inspect
+       list-tags
+       login
+       logout
+       manifest-digest
+       standalone-sign
+       standalone-verify
+       sync
+       help
+       h
+     )
+
+     case "$prev" in
+         # XXX: Changes here need to be reflected in $options_with_args as well.
+         --policy|--registries.d|--override-arch|--override-os|--override-variant|--command-timeout)
+             return
+             ;;
+     esac
+
+     case "$cur" in
+         -*)
+             while IFS='' read -r line; do COMPREPLY+=("$line"); done < <(compgen -W "$boolean_options $options_with_args" -- "$cur")
+             ;;
+         *)
+             while IFS='' read -r line; do COMPREPLY+=("$line"); done < <(compgen -W "${commands[*]} help" -- "$cur")
+             ;;
+     esac
+}
+
+_cli_bash_autocomplete() {
+     local cur
+
+     COMPREPLY=()
+     cur="${COMP_WORDS[COMP_CWORD]}"
+     COMPREPLY=()
+     local cur prev words cword
+
+     _get_comp_words_by_ref -n : cur prev words cword
+
+     local command="skopeo" cpos=0
+     local counter=1
+     while [ $counter -lt "$cword" ]; do
+         case "${words[$counter]}" in
+             skopeo|copy|sync|inspect|delete|manifest-digest|standalone-sign|standalone-verify|help|h|list-repository-tags)
+                 command="${words[$counter]//-/_}"
+                 cpos=$counter
+                 (( cpos++ ))
+                 break
+                 ;;
+         esac
+         (( counter++ ))
+     done
+
+     local completions_func=_skopeo_${command}
+     declare -F "$completions_func" >/dev/null && $completions_func
+
+     return 0
+}
+
+ complete -F _cli_bash_autocomplete skopeo

contrib/cirrus/mac_cleanup.sh

@@ -1,40 +0,0 @@
-#!/bin/bash
-
-# This script is intended to be called by Cirrus-CI on a Mac M1 persistent worker.
-# It performs a best-effort attempt at cleaning up from one task execution to the next.
-# Since it run both before and after tasks, it must exit cleanly if there was a cleanup
-# failure (i.e. file or directory not found).
-
-# Help anybody debugging side-effects, since failures are ignored (by necessity).
-set +e -x
-
-# These are the main processes which could leak out of testing.
-killall podman vfkit gvproxy make go ginkgo
-
-mkdir -p $TMPDIR
-
-# Golang will leave behind lots of read-only bits, ref:
-# https://go.dev/ref/mod#module-cache
-# However other tools/scripts could also set things read-only.
-# At this point in CI, we really want all this stuff gone-gone,
-# so there's actually zero-chance it can interfere.
-chmod -R u+w $TMPDIR/* $TMPDIR/.??*
-
-# This is defined as $TMPDIR during setup.  Name must be kept
-# "short" as sockets may reside here.  Darwin suffers from
-# the same limited socket-pathname character-length restriction
-# as Linux.
-rm -rf $TMPDIR/* $TMPDIR/.??*
-
-# Don't change or clobber anything under $CIRRUS_WORKING_DIR for
-# the currently running task.  But make sure we have write permission
-# (go get sets dependencies ro) for everything else, before removing it.
-# First make everything writeable - see the "Golang will..." comment above.
-# shellcheck disable=SC2154
-find "$HOME/ci" -mindepth 1 -maxdepth 1 \
-    -not -name "*task-${CIRRUS_TASK_ID}*" -prune -exec chmod -R u+w '{}' +
-find "$HOME/ci" -mindepth 1 -maxdepth 1 \
-    -not -name "*task-${CIRRUS_TASK_ID}*" -prune -exec rm -rf '{}' +
-
-# Bash scripts exit with the status of the last command.
-true

contrib/cirrus/ostree_ext.dockerfile

@@ -1,15 +0,0 @@
-ARG BASE_FQIN=quay.io/coreos-assembler/fcos-buildroot:testing-devel
-FROM $BASE_FQIN
-
-# See 'Danger of using COPY and ADD instructions'
-# at https://cirrus-ci.org/guide/docker-builder-vm/#dockerfile-as-a-ci-environment
-# Provide easy way to force-invalidate image cache by .cirrus.yml change
-ARG CIRRUS_IMAGE_VERSION
-ENV CIRRUS_IMAGE_VERSION=$CIRRUS_IMAGE_VERSION
-ADD https://sh.rustup.rs /var/tmp/rustup_installer.sh
-
-RUN dnf remove -y rust && \
-    chmod +x /var/tmp/rustup_installer.sh && \
-    /var/tmp/rustup_installer.sh -y --default-toolchain stable --profile minimal
-
-ENV PATH=/root/.cargo/bin:/root/.local/bin:/root/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

contrib/cirrus/runner.sh

@@ -6,6 +6,17 @@
 
 set -e
 
+_EOL=20270501
+if [[ $(date +%Y%m%d) -ge $_EOL ]]; then
+    die "As of $_EOL this branch is probably
+no longer supported in RHEL 9.0/8.8, please
+confirm this with RHEL Program Management.  If so:
+It should be removed from Cirrus-Cron,
+the .cirrus.yml file removed, and
+the VM images (manually) unmarked
+'permanent=true'"
+fi
+
 # BEGIN Global export of all variables
 set -a
 
@@ -53,7 +64,7 @@ _run_setup() {
     fi
 
     # VM's come with the distro. skopeo package pre-installed
-    dnf remove -y skopeo
+    dnf erase -y skopeo
 
     msg "Removing systemd-resolved from nsswitch.conf"
     # /etc/resolv.conf is already set to bypass systemd-resolvd
@@ -112,19 +123,18 @@ _run_unit() {
     make test-unit-local BUILDTAGS="$BUILDTAGS"
 }
 
-_podman_reset() {
-    # Ensure we start with a clean-slate
-    showrun podman system reset --force
-}
-
 _run_integration() {
-    _podman_reset
+    # Ensure we start with a clean-slate
+    podman system reset --force
+
     make test-integration-local BUILDTAGS="$BUILDTAGS"
 }
 
 _run_system() {
-    _podman_reset
-    ##### Note: Test MODIFIES THE HOST SETUP #####
+    # Ensure we start with a clean-slate
+    podman system reset --force
+
+    # Executes with containers required for testing.
     make test-system-local BUILDTAGS="$BUILDTAGS"
 }
 

contrib/skopeoimage/README.md

@@ -1,2 +1,56 @@
-The skopeo container image build context and automation have been
-moved to [https://github.com/containers/image_build/tree/main/skopeo](https://github.com/containers/image_build/tree/main/skopeo)
+<img src="https://cdn.rawgit.com/containers/skopeo/master/docs/skopeo.svg" width="250">
+
+----
+
+# skopeoimage
+
+## Overview
+
+This directory contains the Dockerfiles necessary to create the skopeoimage container
+images that are housed on quay.io under the skopeo account.  All repositories where
+the images live are public and can be pulled without credentials.  These container images are secured and the
+resulting containers can run safely with privileges within the container.
+
+The container images are built using the latest Fedora and then Skopeo is installed into them.
+The PATH in the container images is set to the default PATH provided by Fedora.  Also, the
+ENTRYPOINT and the WORKDIR variables are not set within these container images, as such they
+default to `/`.
+
+The container images are:
+
+  * `quay.io/containers/skopeo:<version>` and `quay.io/skopeo/stable:<version>` -
+    These images are built when a new Skopeo version becomes available in
+    Fedora.  These images are intended to be unchanging and stable, they will
+    never be updated by automation once they've been pushed.  For build details,
+    please [see the configuration file](stable/Dockerfile).
+  * `quay.io/containers/skopeo:latest` and `quay.io/skopeo/stable:latest` -
+    Built daily using the same Dockerfile as above.  The skopeo version
+    will remain the "latest" available in Fedora, however the image
+    contents may vary compared to the version-tagged images.
+  * `quay.io/skopeo/testing:latest` - This image is built daily, using the
+    latest version of Skopeo that was in the Fedora `updates-testing` repository.
+    The image is Built with [the testing Dockerfile](testing/Dockerfile).
+  * `quay.io/skopeo/upstream:latest` - This image is built daily using the latest
+    code found in this GitHub repository.  Due to the image changing frequently,
+    it's not guaranteed to be stable or even executable.  The image is built with
+    [the upstream Dockerfile](upstream/Dockerfile).
+
+
+## Sample Usage
+
+Although not required, it is suggested that [Podman](https://github.com/containers/podman) be used with these container images.
+
+```
+# Get Help on Skopeo
+podman run docker://quay.io/skopeo/stable:latest --help
+
+# Get help on the Skopeo Copy command
+podman run docker://quay.io/skopeo/stable:latest copy --help
+
+# Copy the Skopeo container image from quay.io to
+# a private registry
+podman run docker://quay.io/skopeo/stable:latest copy docker://quay.io/skopeo/stable docker://registry.internal.company.com/skopeo
+
+# Inspect the fedora:latest image
+podman run docker://quay.io/skopeo/stable:latest inspect --config docker://registry.fedoraproject.org/fedora:latest  | jq
+```

contrib/skopeoimage/stable/Dockerfile

@@ -0,0 +1,33 @@
+# stable/Dockerfile
+#
+# Build a Skopeo container image from the latest
+# stable version of Skopeo on the Fedoras Updates System.
+# https://bodhi.fedoraproject.org/updates/?search=skopeo
+# This image can be used to create a secured container
+# that runs safely with privileges within the container.
+#
+FROM registry.fedoraproject.org/fedora:latest
+
+# Don't include container-selinux and remove
+# directories used by yum that are just taking
+# up space.  Also reinstall shadow-utils as without
+# doing so, the setuid/setgid bits on newuidmap
+# and newgidmap are lost in the Fedora images. 
+RUN useradd skopeo; yum -y update; yum -y reinstall shadow-utils; yum -y install skopeo fuse-overlayfs --exclude container-selinux; yum -y clean all; rm -rf /var/cache/dnf/* /var/log/dnf* /var/log/yum*
+
+# Adjust storage.conf to enable Fuse storage.
+RUN sed -i -e 's|^#mount_program|mount_program|g' -e '/additionalimage.*/a "/var/lib/shared",' -e 's|^mountopt[[:space:]]*=.*$|mountopt = "nodev,fsync=0"|g' /etc/containers/storage.conf
+
+# Setup the ability to use additional stores
+# with this container image.
+RUN mkdir -p /var/lib/shared/overlay-images /var/lib/shared/overlay-layers; touch /var/lib/shared/overlay-images/images.lock; touch /var/lib/shared/overlay-layers/layers.lock
+
+# Setup skopeo's uid/guid entries
+RUN echo skopeo:100000:65536 > /etc/subuid
+RUN echo skopeo:100000:65536 > /etc/subgid
+
+# Point to the Authorization file
+ENV REGISTRY_AUTH_FILE=/tmp/auth.json
+
+# Set the entrypoint
+ENTRYPOINT ["/usr/bin/skopeo"]

contrib/skopeoimage/testing/Dockerfile

@@ -0,0 +1,34 @@
+# testing/Dockerfile
+#
+# Build a Skopeo container image from the latest
+# version of Skopeo that is in updates-testing
+# on the Fedoras Updates System.
+# https://bodhi.fedoraproject.org/updates/?search=skopeo
+# This image can be used to create a secured container
+# that runs safely with privileges within the container.
+#
+FROM registry.fedoraproject.org/fedora:latest
+
+# Don't include container-selinux and remove
+# directories used by yum that are just taking
+# up space.  Also reinstall shadow-utils as without
+# doing so, the setuid/setgid bits on newuidmap
+# and newgidmap are lost in the Fedora images. 
+RUN useradd skopeo; yum -y update; yum -y reinstall shadow-utils; yum -y install skopeo fuse-overlayfs --enablerepo updates-testing --exclude container-selinux; yum -y clean all; rm -rf /var/cache/dnf/* /var/log/dnf* /var/log/yum*
+
+# Adjust storage.conf to enable Fuse storage.
+RUN sed -i -e 's|^#mount_program|mount_program|g' -e '/additionalimage.*/a "/var/lib/shared",' -e 's|^mountopt[[:space:]]*=.*$|mountopt = "nodev,fsync=0"|g' /etc/containers/storage.conf
+
+# Setup the ability to use additional stores
+# with this container image.
+RUN mkdir -p /var/lib/shared/overlay-images /var/lib/shared/overlay-layers; touch /var/lib/shared/overlay-images/images.lock; touch /var/lib/shared/overlay-layers/layers.lock
+
+# Setup skopeo's uid/guid entries
+RUN echo skopeo:100000:65536 > /etc/subuid
+RUN echo skopeo:100000:65536 > /etc/subgid
+
+# Point to the Authorization file
+ENV REGISTRY_AUTH_FILE=/tmp/auth.json
+
+# Set the entrypoint
+ENTRYPOINT ["/usr/bin/skopeo"]

contrib/skopeoimage/upstream/Dockerfile

@@ -0,0 +1,54 @@
+# upstream/Dockerfile
+#
+# Build a Skopeo container image from the latest
+# upstream version of Skopeo on GitHub.
+# https://github.com/containers/skopeo
+# This image can be used to create a secured container
+# that runs safely with privileges within the container.
+#
+FROM registry.fedoraproject.org/fedora:latest
+
+# Don't include container-selinux and remove
+# directories used by yum that are just taking
+# up space.  Also reinstall shadow-utils as without
+# doing so, the setuid/setgid bits on newuidmap
+# and newgidmap are lost in the Fedora images. 
+RUN useradd skopeo; yum -y update; yum -y reinstall shadow-utils; \
+yum -y install make \
+golang \
+git \
+go-md2man \
+fuse-overlayfs \
+fuse3 \
+containers-common \
+gpgme-devel \
+libassuan-devel \
+btrfs-progs-devel \
+device-mapper-devel --enablerepo updates-testing --exclude container-selinux; \
+mkdir /root/skopeo; \
+git clone https://github.com/containers/skopeo /root/skopeo/src/github.com/containers/skopeo; \
+export GOPATH=/root/skopeo; \
+cd /root/skopeo/src/github.com/containers/skopeo; \
+make bin/skopeo;\
+make PREFIX=/usr install;\
+rm -rf /root/skopeo/*; \
+yum -y remove git golang go-md2man make; \
+yum -y clean all; yum -y clean all; rm -rf /var/cache/dnf/* /var/log/dnf* /var/log/yum*
+
+
+# Adjust storage.conf to enable Fuse storage.
+RUN sed -i -e 's|^#mount_program|mount_program|g' -e '/additionalimage.*/a "/var/lib/shared",' -e 's|^mountopt[[:space:]]*=.*$|mountopt = "nodev,fsync=0"|g' /etc/containers/storage.conf
+
+# Setup the ability to use additional stores
+# with this container image.
+RUN mkdir -p /var/lib/shared/overlay-images /var/lib/shared/overlay-layers; touch /var/lib/shared/overlay-images/images.lock; touch /var/lib/shared/overlay-layers/layers.lock
+
+# Setup skopeo's uid/guid entries
+RUN echo skopeo:100000:65536 > /etc/subuid
+RUN echo skopeo:100000:65536 > /etc/subgid
+
+# Point to the Authorization file
+ENV REGISTRY_AUTH_FILE=/tmp/auth.json
+
+# Set the entrypoint
+ENTRYPOINT ["/usr/bin/skopeo"]

default.yaml

@@ -1,21 +1,19 @@
 # This is a default registries.d configuration file.  You may
 # add to this file or create additional files in registries.d/.
 #
-# lookaside: for reading/writing simple signing signatures
-# lookaside-staging: for writing simple signing signatures, preferred over lookaside
+# sigstore: indicates a location that is read and write
+# sigstore-staging: indicates a location that is only for write
 #
-# lookaside and lookaside-staging take a value of the following:
-#   lookaside:  {schema}://location
+# sigstore and sigstore-staging take a value of the following:
+#   sigstore:  {schema}://location
 #
 # For reading signatures, schema may be http, https, or file.
 # For writing signatures, schema may only be file.
 
-# The default locations are built-in, for both reading and writing:
-# /var/lib/containers/sigstore for root, or
-# ~/.local/share/containers/sigstore for non-root users.
+# This is the default signature write location for docker registries.
 default-docker:
-#  lookaside: https://…
-#  lookaside-staging: file:///…
+#  sigstore: file:///var/lib/containers/sigstore
+  sigstore-staging: file:///var/lib/containers/sigstore
 
 # The 'docker' indicator here is the start of the configuration
 # for docker registries.
@@ -23,6 +21,6 @@ default-docker:
 # docker:
 #
 #   privateregistry.com:
-#    lookaside: https://privateregistry.com/sigstore/
-#    lookaside-staging: /mnt/nfs/privateregistry/sigstore
+#    sigstore: http://privateregistry.com/sigstore/
+#    sigstore-staging: /mnt/nfs/privateregistry/sigstore
 

docs/skopeo-copy.1.md

@@ -20,8 +20,6 @@ automatically inherit any parts of the source name.
 
 ## OPTIONS
 
-See also [skopeo(1)](skopeo.1.md) for options placed before the subcommand name.
-
 **--additional-tag**=_strings_
 
 Additional tags (supports docker-archive).
@@ -60,8 +58,6 @@ After copying the image, write the digest of the resulting image to the file.
 
 Preserve the digests during copying. Fail if the digest cannot be preserved.
 
-This option does not change what will be copied; consider using `--all` at the same time.
-
 **--encrypt-layer** _ints_
 
 *Experimental* the 0-indexed layer indices, with support for negative indexing (e.g. 0 is the first layer, -1 is the last layer)
@@ -74,7 +70,7 @@ MANIFEST TYPE (oci, v2s1, or v2s2) to use in the destination (default is manifes
 
 Print usage statement
 
-**--multi-arch** _option_
+**--multi-arch**
 
 Control what is copied if _source-image_ refers to a multi-architecture image. Default is system.
 
@@ -93,26 +89,13 @@ Suppress output information when copying images.
 
 Do not copy signatures, if any, from _source-image_. Necessary when copying a signed image to a destination which does not support signatures.
 
-**--sign-by** _key-id_
+**--sign-by**=_key-id_
 
-Add a “simple signing” signature using that key ID for an image name corresponding to _destination-image_
+Add a signature using that key ID for an image name corresponding to _destination-image_
 
-**--sign-by-sigstore** _param-file_
+**--sign-passphrase-file**=_path_
 
-Add a sigstore signature based on the options in the specified containers sigstore signing parameter file, _param-file_.
-See containers-sigstore-signing-params.yaml(5) for details about the file format.
-
-**--sign-by-sigstore-private-key** _path_
-
-Add a sigstore signature using a private key at _path_ for an image name corresponding to _destination-image_
-
-**--sign-passphrase-file** _path_
-
-The passphare to use when signing with `--sign-by` or `--sign-by-sigstore-private-key`. Only the first line will be read. A passphrase stored in a file is of questionable security if other users can read this file. Do not use this option if at all avoidable.
-
-**--sign-identity** _reference_
-
-The identity to use when signing the image. The identity must be a fully specified docker reference. If the identity is not specified, the target docker reference will be used.
+The passphare to use when signing with the key ID from `--sign-by`. Only the first line will be read. A passphrase stored in a file is of questionable security if other users can read this file. Do not use this option if at all avoidable.
 
 **--src-shared-blob-dir** _directory_
 
@@ -182,9 +165,7 @@ Existing signatures, if any, are preserved as well.
 
 **--dest-compress-format** _format_
 
-Specifies the compression format to use.  Supported values are: `gzip`, `zstd` and `zstd:chunked`.
-`zstd:chunked` is incompatible with encrypting images,
-and will be treated as `zstd` with a warning in that case.
+Specifies the compression format to use.  Supported values are: `gzip` and `zstd`.
 
 **--dest-compress-level** _format_
 
@@ -222,19 +203,15 @@ The username to access the destination registry.
 
 The password to access the destination registry.
 
-**--image-parallel-copies** _n_
-
-Maximum number of image layers to be copied (pulled/pushed) simultaneously. Not setting this field will fall back to containers/image defaults.
-
 ## EXAMPLES
 
 To just copy an image from one registry to another:
-```console
+```sh
 $ skopeo copy docker://quay.io/skopeo/stable:latest docker://registry.example.com/skopeo:latest
 ```
 
 To copy the layers of the docker.io busybox image to a local directory:
-```console
+```sh
 $ mkdir -p /var/lib/images/busybox
 $ skopeo copy docker://busybox:latest dir:/var/lib/images/busybox
 $ ls /var/lib/images/busybox/*
@@ -243,46 +220,42 @@ $ ls /var/lib/images/busybox/*
   /tmp/busybox/8ddc19f16526912237dd8af81971d5e4dd0587907234be2b83e249518d5b673f.tar
 ```
 
-To create an archive consumable by `docker load` (but note that using a registry is almost always more efficient):
-```console
-$ skopeo copy docker://busybox:latest docker-archive:archive-file.tar:busybox:latest
-```
-
 To copy and sign an image:
-```console
-$ skopeo copy --sign-by dev@example.com containers-storage:example/busybox:streaming docker://example/busybox:gold
+
+```sh
+# skopeo copy --sign-by dev@example.com containers-storage:example/busybox:streaming docker://example/busybox:gold
 ```
 
 To encrypt an image:
-```console
-$ skopeo copy docker://docker.io/library/nginx:1.17.8 oci:local_nginx:1.17.8
+```sh
+skopeo copy docker://docker.io/library/nginx:1.17.8 oci:local_nginx:1.17.8
 
-$ openssl genrsa -out private.key 1024
-$ openssl rsa -in private.key -pubout > public.key
+openssl genrsa -out private.key 1024
+openssl rsa -in private.key -pubout > public.key
 
-$ skopeo copy --encryption-key jwe:./public.key oci:local_nginx:1.17.8 oci:try-encrypt:encrypted
+skopeo  copy --encryption-key jwe:./public.key oci:local_nginx:1.17.8 oci:try-encrypt:encrypted
 ```
 
 To decrypt an image:
-```console
-$ skopeo copy --decryption-key ./private.key oci:try-encrypt:encrypted oci:try-decrypt:decrypted
+```sh
+skopeo copy --decryption-key ./private.key oci:try-encrypt:encrypted oci:try-decrypt:decrypted
 ```
 
 To copy encrypted image without decryption:
-```console
-$ skopeo copy oci:try-encrypt:encrypted oci:try-encrypt-copy:encrypted
+```sh
+skopeo copy oci:try-encrypt:encrypted oci:try-encrypt-copy:encrypted
 ```
 
 To decrypt an image that requires more than one key:
-```console
-$ skopeo copy --decryption-key ./private1.key --decryption-key ./private2.key --decryption-key ./private3.key oci:try-encrypt:encrypted oci:try-decrypt:decrypted
+```sh
+skopeo copy --decryption-key ./private1.key --decryption-key ./private2.key --decryption-key ./private3.key oci:try-encrypt:encrypted oci:try-decrypt:decrypted
 ```
 
 Container images can also be partially encrypted by specifying the index of the layer. Layers are 0-indexed indices, with support for negative indexing. i.e. 0 is the first layer, -1 is the last layer.
 
 Let's say out of 3 layers that the image `docker.io/library/nginx:1.17.8` is made up of, we only want to encrypt the 2nd layer,
-```console
-$ skopeo copy --encryption-key jwe:./public.key --encrypt-layer 1 oci:local_nginx:1.17.8 oci:try-encrypt:encrypted
+```sh
+skopeo  copy --encryption-key jwe:./public.key --encrypt-layer 1 oci:local_nginx:1.17.8 oci:try-encrypt:encrypted
 ```
 
 ## SEE ALSO

docs/skopeo-delete.1.md

@@ -6,33 +6,21 @@ skopeo\-delete - Mark the _image-name_ for later deletion by the registry's garb
 ## SYNOPSIS
 **skopeo delete** [*options*] _image-name_
 
-## DESCRIPTION
-
-Mark _image-name_ for deletion.
-The effect of this is registry-specific; many registries don’t support this operation, or don’t allow it in some circumstances / configurations.
-
-**WARNING**: If _image-name_ contains a digest, this affects the referenced manifest, and may delete all tags (within the current repository?) pointing to that manifest.
-
-**WARNING**: If _image-name_ contains a tag (but not a digest), in the current version of Skopeo this resolves the tag into a digest, and then deletes the manifest by digest, as described above (possibly deleting all tags pointing to that manifest, not just the provided tag). This behavior may change in the future.
-
-
-When using the github.com/distribution/distribution registry server:
-To release the allocated disk space, you must login to the container registry server and execute the container registry garbage collector. E.g.,
+Mark _image-name_ for deletion.  To release the allocated disk space, you must login to the container registry server and execute the container registry garbage collector. E.g.,
 
 ```
 /usr/bin/registry garbage-collect /etc/docker-distribution/registry/config.yml
-```
+
 Note: sometimes the config.yml is stored in /etc/docker/registry/config.yml
 
 If you are running the container registry inside of a container you would execute something like:
-```
+
 $ docker exec -it registry /usr/bin/registry garbage-collect /etc/docker-distribution/registry/config.yml
+
 ```
 
 ## OPTIONS
 
-See also [skopeo(1)](skopeo.1.md) for options placed before the subcommand name.
-
 **--authfile** _path_
 
 Path of the authentication file. Default is ${XDG_RUNTIME\_DIR}/containers/auth.json, which is set using `skopeo login`.
@@ -87,8 +75,8 @@ The password to access the registry.
 ## EXAMPLES
 
 Mark image example/pause for deletion from the registry.example.com registry:
-```console
-$ skopeo delete docker://registry.example.com/example/pause:latest
+```sh
+$ skopeo delete --force docker://registry.example.com/example/pause:latest
 ```
 See above for additional details on using the command **delete**.
 

docs/skopeo-generate-sigstore-key.1.md

@@ -1,49 +0,0 @@
-% skopeo-generate-sigstore-key(1)
-
-## NAME
-skopeo\-generate-sigstore-key - Generate a sigstore public/private key pair.
-
-## SYNOPSIS
-**skopeo generate-sigstore-key** [*options*] **--output-prefix** _prefix_
-
-## DESCRIPTION
-
-Generates a public/private key pair suitable for creating sigstore image signatures.
-The private key is encrypted with a passphrase;
-if one is not provided using an option, this command prompts for it interactively.
-
-The private key is written to _prefix_**.private** .
-The public key is written to _prefix_**.pub** .
-
-## OPTIONS
-
-See also [skopeo(1)](skopeo.1.md) for options placed before the subcommand name.
-
-**--help**, **-h**
-
-Print usage statement
-
-**--output-prefix** _prefix_
-
-Mandatory.
-Path prefix for the output keys (_prefix_**.private** and _prefix_**.pub**).
-
-**--passphrase-file** _path_
-
-The passphare to use to encrypt the private key.
-Only the first line will be read.
-A passphrase stored in a file is of questionable security if other users can read this file.
-Do not use this option if at all avoidable.
-
-## EXAMPLES
-
-```console
-$ skopeo generate-sigstore-key --output-prefix mykey
-```
-
-# SEE ALSO
-skopeo(1), skopeo-copy(1), containers-policy.json(5)
-
-## AUTHORS
-
-Miloslav Trmač <mitr@redhat.com>

docs/skopeo-inspect.1.md

@@ -17,8 +17,6 @@ To see values for a different architecture/OS, use the **--override-os** / **--o
 
 ## OPTIONS
 
-See also [skopeo(1)](skopeo.1.md) for options placed before the subcommand name.
-
 **--authfile** _path_
 
 Path of the authentication file. Default is ${XDG\_RUNTIME\_DIR}/containers/auth.json, which is set using `skopeo login`.
@@ -44,7 +42,6 @@ Use docker daemon host at _host_ (`docker-daemon:` transport only)
 
 Format the output using the given Go template.
 The keys of the returned JSON can be used as the values for the --format flag (see examples below).
-Supports the Go templating functions available at https://pkg.go.dev/github.com/containers/common/pkg/report#hdr-Template_Functions
 
 **--help**, **-h**
 
@@ -90,90 +87,74 @@ Do not list the available tags from the repository in the output. When `true`, t
 ## EXAMPLES
 
 To review information for the image fedora from the docker.io registry:
-```console
+```sh
 $ skopeo inspect docker://docker.io/fedora
-
 {
     "Name": "docker.io/library/fedora",
-    "Digest": "sha256:f99efcddc4dd6736d8a88cc1ab6722098ec1d77dbf7aed9a7a514fc997ca08e0",
+    "Digest": "sha256:a97914edb6ba15deb5c5acf87bd6bd5b6b0408c96f48a5cbd450b5b04509bb7d",
     "RepoTags": [
-        "20",
-        "21",
-        "..."
+	"20",
+	"21",
+	"22",
+	"23",
+	"24",
+	"heisenbug",
+	"latest",
+	"rawhide"
     ],
-    "Created": "2022-11-16T07:26:42.618327645Z",
-    "DockerVersion": "20.10.12",
-    "Labels": {
-        "maintainer": "Clement Verna \u003ccverna@fedoraproject.org\u003e"
-    },
+    "Created": "2016-06-20T19:33:43.220526898Z",
+    "DockerVersion": "1.10.3",
+    "Labels": {},
     "Architecture": "amd64",
     "Os": "linux",
     "Layers": [
-        "sha256:cb8b1ed77979b894115a983f391465651aa7eb3edd036be4b508eea47271eb93"
-    ],
-    "LayersData": [
-        {
-            "MIMEType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
-            "Digest": "sha256:cb8b1ed77979b894115a983f391465651aa7eb3edd036be4b508eea47271eb93",
-            "Size": 65990920,
-            "Annotations": null
-        }
-    ],
-    "Env": [
-        "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
-        "DISTTAG=f37container",
-        "FGC=f37",
-        "FBR=f37"
+	"sha256:7c91a140e7a1025c3bc3aace4c80c0d9933ac4ee24b8630a6b0b5d8b9ce6b9d4"
     ]
 }
 ```
 
 To inspect python from the docker.io registry and not show the available tags:
-```console
+```sh
 $ skopeo inspect --no-tags docker://docker.io/library/python
 {
     "Name": "docker.io/library/python",
-    "Digest": "sha256:10fc14aa6ae69f69e4c953cffd9b0964843d8c163950491d2138af891377bc1d",
+    "Digest": "sha256:5ca194a80ddff913ea49c8154f38da66a41d2b73028c5cf7e46bc3c1d6fda572",
     "RepoTags": [],
-    "Created": "2022-11-16T06:55:28.566254104Z",
-    "DockerVersion": "20.10.12",
+    "Created": "2021-10-05T23:40:54.936108045Z",
+    "DockerVersion": "20.10.7",
     "Labels": null,
     "Architecture": "amd64",
     "Os": "linux",
     "Layers": [
-        "sha256:a8ca11554fce00d9177da2d76307bdc06df7faeb84529755c648ac4886192ed1",
-        "sha256:e4e46864aba2e62ba7c75965e4aa33ec856ee1b1074dda6b478101c577b63abd",
-        "..."
-    ],
-    "LayersData": [
-        {
-            "MIMEType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
-            "Digest": "sha256:a8ca11554fce00d9177da2d76307bdc06df7faeb84529755c648ac4886192ed1",
-            "Size": 55038615,
-            "Annotations": null
-        },
-        {
-            "MIMEType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
-            "Digest": "sha256:e4e46864aba2e62ba7c75965e4aa33ec856ee1b1074dda6b478101c577b63abd",
-            "Size": 5164893,
-            "Annotations": null
-        },
-        "..."
+        "sha256:df5590a8898bedd76f02205dc8caa5cc9863267dbcd8aac038bcd212688c1cc7",
+        "sha256:705bb4cb554eb7751fd21a994f6f32aee582fbe5ea43037db6c43d321763992b",
+        "sha256:519df5fceacdeaadeec563397b1d9f4d7c29c9f6eff879739cab6f0c144f49e1",
+        "sha256:ccc287cbeddc96a0772397ca00ec85482a7b7f9a9fac643bfddd87b932f743db",
+        "sha256:e3f8e6af58ed3a502f0c3c15dce636d9d362a742eb5b67770d0cfcb72f3a9884",
+        "sha256:aebed27b2d86a5a3a2cbe186247911047a7e432b9d17daad8f226597c0ea4276",
+        "sha256:54c32182bdcc3041bf64077428467109a70115888d03f7757dcf614ff6d95ebe",
+        "sha256:cc8b7caedab13af07adf4836e13af2d4e9e54d794129b0fd4c83ece6b1112e86",
+        "sha256:462c3718af1d5cdc050cfba102d06c26f78fe3b738ce2ca2eb248034b1738945"
     ],
     "Env": [
         "PATH=/usr/local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
         "LANG=C.UTF-8",
-        "...",
+        "GPG_KEY=A035C8C19219BA821ECEA86B64E628F8D684696D",
+        "PYTHON_VERSION=3.10.0",
+        "PYTHON_PIP_VERSION=21.2.4",
+        "PYTHON_SETUPTOOLS_VERSION=57.5.0",
+        "PYTHON_GET_PIP_URL=https://github.com/pypa/get-pip/raw/d781367b97acf0ece7e9e304bf281e99b618bf10/public/get-pip.py",
+        "PYTHON_GET_PIP_SHA256=01249aa3e58ffb3e1686b7141b4e9aac4d398ef4ac3012ed9dff8dd9f685ffe0"
     ]
 }
 ```
 
-```console
+```
 $ /bin/skopeo inspect --config docker://registry.fedoraproject.org/fedora --format "{{ .Architecture }}"
 amd64
 ```
 
-```console
+```
 $ /bin/skopeo inspect --format '{{ .Env }}' docker://registry.access.redhat.com/ubi8
 [PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin container=oci]
 ```

docs/skopeo-list-tags.1.md

@@ -1,19 +1,17 @@
 % skopeo-list-tags(1)
 
 ## NAME
-skopeo\-list\-tags - List image names in a transport-specific collection of images.
+skopeo\-list\-tags - List tags in the transport-specific image repository.
 
 ## SYNOPSIS
-**skopeo list-tags** [*options*] _source-image_
+**skopeo list-tags** [*options*] _repository-name_
 
-Return a list of tags from _source-image_ in a registry or a local docker-archive file.
+Return a list of tags from _repository-name_ in a registry.
 
-  _source-image_ name of the repository to retrieve a tag listing from or a local docker-archive file.
+  _repository-name_ name of repository to retrieve tag listing from
 
 ## OPTIONS
 
-See also [skopeo(1)](skopeo.1.md) for options placed before the subcommand name.
-
 **--authfile** _path_
 
 Path of the authentication file. Default is ${XDG\_RUNTIME\_DIR}/containers/auth.json, which is set using `skopeo login`.
@@ -55,7 +53,7 @@ The password to access the registry.
 
 ## REPOSITORY NAMES
 
-Repository names are transport-specific references as each transport may have its own concept of a "repository" and "tags".
+Repository names are transport-specific references as each transport may have its own concept of a "repository" and "tags". Currently, only the Docker transport is supported.
 
 This commands refers to repositories using a _transport_`:`_details_ format. The following formats are supported:
 
@@ -74,14 +72,12 @@ This commands refers to repositories using a _transport_`:`_details_ format. The
         "docker.io/myuser/myimage:v1.0"
         "docker.io/myuser/myimage@sha256:f48c4cc192f4c3c6a069cb5cca6d0a9e34d6076ba7c214fd0cc3ca60e0af76bb"
 
-  **docker-archive:path[:docker-reference]
-  more than one images were stored in a docker save-formatted file. 
 
 ## EXAMPLES
 
 ### Docker Transport
 To get the list of tags in the "fedora" repository from the docker.io registry (the repository name expands to "library/fedora" per docker transport canonical form):
-```console
+```sh
 $ skopeo list-tags docker://docker.io/fedora
 {
     "Repository": "docker.io/library/fedora",
@@ -112,7 +108,7 @@ $ skopeo list-tags docker://docker.io/fedora
 
 To list the tags in a local host docker/distribution registry on port 5000, in this case for the "fedora" repository:
 
-```console
+```sh
 $ skopeo list-tags docker://localhost:5000/fedora
 {
     "Repository": "localhost:5000/fedora",
@@ -125,48 +121,8 @@ $ skopeo list-tags docker://localhost:5000/fedora
 
 ```
 
-### Docker-archive Transport
-
-To list the tags in a local docker-archive file:
-
-```console
-$ skopeo list-tags docker-archive:/tmp/busybox.tar.gz
-{
-    "Tags": [
-        "busybox:1.28.3"
-    ]
-}
-```
-
-Also supports more than one tags in an archive:
-
-```console
-$ skopeo list-tags docker-archive:/tmp/docker-two-images.tar.gz
-{
-    "Tags": [
-        "example.com/empty:latest",
-        "example.com/empty/but:different"
-    ]
-}
-```
-
-Will include a source-index entry for each untagged image:
-
-```console
-$ skopeo list-tags docker-archive:/tmp/four-tags-with-an-untag.tar
-{
-    "Tags": [
-        "image1:tag1",
-        "image2:tag2",
-        "@2",
-        "image4:tag4"
-    ]
-}
-```
-
-
 # SEE ALSO
-skopeo(1), skopeo-login(1), docker-login(1), containers-auth.json(5), containers-transports(1)
+skopeo(1), skopeo-login(1), docker-login(1), containers-auth.json(5)
 
 ## AUTHORS
 

docs/skopeo-login.1.md

@@ -15,8 +15,6 @@ flag. The default path used is **${XDG\_RUNTIME\_DIR}/containers/auth.json**.
 
 ## OPTIONS
 
-See also [skopeo(1)](skopeo.1.md) for options placed before the subcommand name.
-
 **--password**, **-p**=*password*
 
 Password for registry
@@ -36,10 +34,6 @@ Path of the authentication file. Default is ${XDG\_RUNTIME\_DIR}/containers/auth
 Note: You can also override the default path of the authentication file by setting the REGISTRY\_AUTH\_FILE
 environment variable. `export REGISTRY_AUTH_FILE=path`
 
-**--compat-auth-file**=*path*
-
-Instead of updating the default credentials file, update the one at *path*, and use a Docker-compatible format.
-
 **--get-login**
 
 Return the logged-in user for the registry. Return error if no login is found.
@@ -63,41 +57,41 @@ Write more detailed information to stdout
 
 ## EXAMPLES
 
-```console
+```
 $ skopeo login docker.io
 Username: testuser
 Password:
 Login Succeeded!
 ```
 
-```console
+```
 $ skopeo login -u testuser -p testpassword localhost:5000
 Login Succeeded!
 ```
 
-```console
+```
 $ skopeo login --authfile authdir/myauths.json docker.io
 Username: testuser
 Password:
 Login Succeeded!
 ```
 
-```console
+```
 $ skopeo login --tls-verify=false -u test -p test localhost:5000
 Login Succeeded!
 ```
 
-```console
+```
 $ skopeo login --cert-dir /etc/containers/certs.d/ -u foo -p bar localhost:5000
 Login Succeeded!
 ```
 
-```console
+```
 $ skopeo login -u testuser  --password-stdin < testpassword.txt docker.io
 Login Succeeded!
 ```
 
-```console
+```
 $ echo $testpassword | skopeo login -u testuser --password-stdin docker.io
 Login Succeeded!
 ```

docs/skopeo-logout.1.md

@@ -14,8 +14,6 @@ All the cached credentials can be removed by setting the **all** flag.
 
 ## OPTIONS
 
-See also [skopeo(1)](skopeo.1.md) for options placed before the subcommand name.
-
 **--authfile**=*path*
 
 Path of the authentication file. Default is ${XDG\_RUNTIME\_DIR}/containers/auth.json
@@ -23,10 +21,6 @@ Path of the authentication file. Default is ${XDG\_RUNTIME\_DIR}/containers/auth
 Note: You can also override the default path of the authentication file by setting the REGISTRY\_AUTH\_FILE
 environment variable. `export REGISTRY_AUTH_FILE=path`
 
-**--compat-auth-file**=*path*
-
-Instead of updating the default credentials file, update the one at *path*, and use a Docker-compatible format.
-
 **--all**, **-a**
 
 Remove the cached credentials for all registries in the auth file
@@ -41,17 +35,17 @@ Require HTTPS and verify certificates when talking to the container registry or
 
 ## EXAMPLES
 
-```console
+```
 $ skopeo logout docker.io
 Remove login credentials for docker.io
 ```
 
-```console
+```
 $ skopeo logout --authfile authdir/myauths.json docker.io
 Remove login credentials for docker.io
 ```
 
-```console
+```
 $ skopeo logout --all
 Remove login credentials for all registries
 ```

docs/skopeo-manifest-digest.1.md

@@ -18,7 +18,7 @@ Print usage statement
 
 ## EXAMPLES
 
-```console
+```sh
 $ skopeo manifest-digest manifest.json
 sha256:a59906e33509d14c036c8678d687bd4eec81ed7c4b8ce907b888c607f6a1e0e6
 ```

docs/skopeo-standalone-sign.1.md

@@ -1,7 +1,7 @@
 % skopeo-standalone-sign(1)
 
 ## NAME
-skopeo\-standalone-sign - Debugging tool - Sign an image locally without uploading.
+skopeo\-standalone-sign - Debugging tool - Publish and sign an image in one step.
 
 ## SYNOPSIS
 **skopeo standalone-sign** [*options*] _manifest_ _docker-reference_ _key-fingerprint_ **--output**|**-o** _signature_
@@ -17,8 +17,6 @@ This is primarily a debugging tool, useful for special cases, and usually should
 
 ## OPTIONS
 
-See also [skopeo(1)](skopeo.1.md) for options placed before the subcommand name.
-
 **--help**, **-h**
 
 Print usage statement
@@ -33,7 +31,7 @@ The passphare to use when signing with the key ID from `--sign-by`. Only the fir
 
 ## EXAMPLES
 
-```console
+```sh
 $ skopeo standalone-sign busybox-manifest.json registry.example.com/example/busybox 1D8230F6CDB6A06716E414C1DB72F2188BB46CC8 --output busybox.signature
 $
 ```

docs/skopeo-standalone-verify.1.md

@@ -1,10 +1,10 @@
 % skopeo-standalone-verify(1)
 
 ## NAME
-skopeo\-standalone\-verify - Debugging tool - Verify an image signature from local files.
+skopeo\-standalone\-verify - Verify an image signature.
 
 ## SYNOPSIS
-**skopeo standalone-verify** _manifest_ _docker-reference_ _key-fingerprints_ _signature_
+**skopeo standalone-verify** _manifest_ _docker-reference_ _key-fingerprint_ _signature_
 
 ## DESCRIPTION
 
@@ -16,7 +16,7 @@ as per containers-policy.json(5).
 
   _docker-reference_ A docker reference expected to identify the image in the signature
 
-  _key-fingerprints_ Identities of trusted signing keys (comma separated), or "any" to trust any known key when using a public key file
+  _key-fingerprint_ Expected identity of the signing key
 
   _signature_ Path to signature file
 
@@ -24,19 +24,13 @@ as per containers-policy.json(5).
 
 ## OPTIONS
 
-See also [skopeo(1)](skopeo.1.md) for options placed before the subcommand name.
-
 **--help**, **-h**
 
 Print usage statement
 
-**--public-key-file** _public key file_
-
-File containing the public keys to use when verifying signatures. If this is not specified, keys from the GPG homedir are used.
-
 ## EXAMPLES
 
-```console
+```sh
 $ skopeo standalone-verify busybox-manifest.json registry.example.com/example/busybox 1D8230F6CDB6A06716E414C1DB72F2188BB46CC8  busybox.signature
 Signature verified, digest sha256:20bf21ed457b390829cdbeec8795a7bea1626991fda603e0d01b4e7f60427e55
 ```

docs/skopeo-sync.1.md

@@ -1,14 +1,17 @@
 % skopeo-sync(1)
 
 ## NAME
-skopeo\-sync - Synchronize images between registry repositories and local directories.
+skopeo\-sync - Synchronize images between container registries and local directories.
 
 
 ## SYNOPSIS
 **skopeo sync** [*options*] --src _transport_ --dest _transport_ _source_ _destination_
 
 ## DESCRIPTION
-Synchronize images between registry repositories and local directories. Synchronization is achieved by copying all the images found at _source_ to _destination_ - useful when synchronizing a local container registry mirror or for populating registries running inside of air-gapped environments.
+Synchronize images between container registries and local directories.
+The synchronization is achieved by copying all the images found at _source_ to _destination_.
+
+Useful to synchronize a local container registry mirror, and to to populate registries running inside of air-gapped environments.
 
 Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from _source_ and _destination_.
 One of the problems of prefixing a destination with its transport is that, the registry `docker://hostname:port` would be wrongly interpreted as an image reference at a non-fully qualified registry, with `hostname` and `port` the image name and tag.
@@ -29,9 +32,6 @@ When the `--scoped` option is specified, images are prefixed with the source ima
 name can be stored at _destination_.
 
 ## OPTIONS
-
-See also [skopeo(1)](skopeo.1.md) for options placed before the subcommand name.
-
 **--all**, **-a**
 If one of the images in __src__ refers to a list of images, instead of copying just the image which matches the current OS and
 architecture (subject to the use of the global --override-os, --override-arch and --override-variant options), attempt to copy all of
@@ -50,10 +50,6 @@ Path of the authentication file for the source registry. Uses path given by `--a
 
 Path of the authentication file for the destination registry. Uses path given by `--authfile`, if not provided.
 
-**--dry-run**
-
-Run the sync without actually copying data to the destination.
-
 **--src**, **-s** _transport_ Transport for the source repository.
 
 **--dest**, **-d** _transport_ Destination transport.
@@ -66,42 +62,13 @@ Print usage statement.
 
 **--scoped** Prefix images with the source image path, so that multiple images with the same name can be stored at _destination_.
 
-**--append-suffix** _tag-suffix_ String to append to destination tags.
-
-**--digestfile** _path_
-
-After copying the images from source, write the digest of the resulting images along with Image Reference.
-
-```
-sha256:bf91f90823248017a4f920fb541727fa8368dc6cf377a7debbd271cf6a31c8a7 docker://myhost.com/alpine:edge
-sha256:31603596830fc7e56753139f9c2c6bd3759e48a850659506ebfb885d1cf3aef5 docker://myhost.com/postgres:14.3
-
-```
-
-**--preserve-digests**
-
-Preserve the digests during copying. Fail if the digest cannot be preserved.
-
-This option does not change what will be copied; consider using `--all` at the same time.
+**--preserve-digests** Preserve the digests during copying. Fail if the digest cannot be preserved.
 
 **--remove-signatures** Do not copy signatures, if any, from _source-image_. This is necessary when copying a signed image to a destination which does not support signatures.
 
-**--sign-by** _key-id_
+**--sign-by**=_key-id_ Add a signature using that key ID for an image name corresponding to _destination-image_.
 
-Add a “simple signing” signature using that key ID for an image name corresponding to _destination-image_
-
-**--sign-by-sigstore** _param-file_
-
-Add a sigstore signature based on the options in the specified containers sigstore signing parameter file, _param-file_.
-See containers-sigstore-signing-params.yaml(5) for details about the file format.
-
-**--sign-by-sigstore-private-key** _path_
-
-Add a sigstore signature using a private key at _path_ for an image name corresponding to _destination-image_
-
-**--sign-passphrase-file** _path_
-
-The passphare to use when signing with `--sign-by` or `--sign-by-sigstore-private-key`. Only the first line will be read. A passphrase stored in a file is of questionable security if other users can read this file. Do not use this option if at all avoidable.
+**--sign-passphrase-file**=_path_ The passphare to use when signing with the key ID from `--sign-by`. Only the first line will be read. A passphrase stored in a file is of questionable security if other users can read this file. Do not use this option if at all avoidable.
 
 **--src-creds** _username[:password]_ for accessing the source registry.
 
@@ -147,7 +114,7 @@ The password to access the destination registry.
 ## EXAMPLES
 
 ### Synchronizing to a local directory
-```console
+```
 $ skopeo sync --src docker --dest dir registry.example.com/busybox /media/usb
 ```
 Images are located at:
@@ -165,7 +132,7 @@ Images are located at:
 /media/usb/busybox:1-glibc
 ```
 Sync run
-```console
+```
 $ skopeo sync --src dir --dest docker /media/usb/busybox:1-glibc my-registry.local.lan/test/
 ```
 Destination registry content:
@@ -175,7 +142,7 @@ my-registry.local.lan/test/busybox   1-glibc
 ```
 
 ### Synchronizing to a local directory, scoped
-```console
+```
 $ skopeo sync --src docker --dest dir --scoped registry.example.com/busybox /media/usb
 ```
 Images are located at:
@@ -188,8 +155,8 @@ Images are located at:
 ```
 
 ### Synchronizing to a container registry
-```console
-$ skopeo sync --src docker --dest docker registry.example.com/busybox my-registry.local.lan
+```
+skopeo sync --src docker --dest docker registry.example.com/busybox my-registry.local.lan
 ```
 Destination registry content:
 ```
@@ -198,8 +165,8 @@ registry.local.lan/busybox   1-glibc, 1-musl, 1-ubuntu, ..., latest
 ```
 
 ### Synchronizing to a container registry keeping the repository
-```console
-$ skopeo sync --src docker --dest docker registry.example.com/repo/busybox my-registry.local.lan/repo
+```
+skopeo sync --src docker --dest docker registry.example.com/repo/busybox my-registry.local.lan/repo
 ```
 Destination registry content:
 ```
@@ -207,16 +174,6 @@ REPO                              TAGS
 registry.local.lan/repo/busybox   1-glibc, 1-musl, 1-ubuntu, ..., latest
 ```
 
-### Synchronizing to a container registry with tag suffix
-```console
-$ skopeo sync --src docker --dest docker --append-suffix '-mirror' registry.example.com/busybox my-registry.local.lan
-```
-Destination registry content:
-```
-REPO                         TAGS
-registry.local.lan/busybox   1-glibc-mirror, 1-musl-mirror, 1-ubuntu-mirror, ..., latest-mirror
-```
-
 ### YAML file content (used _source_ for `**--src yaml**`)
 
 ```yaml
@@ -229,8 +186,6 @@ registry.example.com:
             - "sha256:0000000000000000000000000000000011111111111111111111111111111111"
     images-by-tag-regex:
         nginx: ^1\.13\.[12]-alpine-perl$
-    images-by-semver:
-        alpine: ">= 3.12.0"
     credentials:
         username: john
         password: this is a secret
@@ -243,22 +198,14 @@ quay.io:
             - latest
 ```
 If the yaml filename is `sync.yml`, sync run:
-```console
-$ skopeo sync --src yaml --dest docker sync.yml my-registry.local.lan/repo/
+```
+skopeo sync --src yaml --dest docker sync.yml my-registry.local.lan/repo/
 ```
 This will copy the following images:
 - Repository `registry.example.com/busybox`: all images, as no tags are specified.
 - Repository `registry.example.com/redis`: images tagged "1.0" and "2.0" along with image with digest "sha256:0000000000000000000000000000000011111111111111111111111111111111".
 - Repository `registry.example.com/nginx`: images tagged "1.13.1-alpine-perl" and "1.13.2-alpine-perl".
 - Repository `quay.io/coreos/etcd`: images tagged "latest".
-- Repository `registry.example.com/alpine`: all images with tags match the semantic version constraint ">= 3.12.0" ("3.12.0, "3.12.1", ... ,"4.0.0", ...)
-
-The full list of possible semantic version comparisons can be found in the
-upstream library's documentation:
-https://github.com/Masterminds/semver/tree/v3.2.0#basic-comparisons.
-
-Version ordering and precedence is understood as defined here:
-https://semver.org/#spec-item-11.
 
 For the registry `registry.example.com`, the "john"/"this is a secret" credentials are used, with server TLS certificates located at `/home/john/certs`.
 

docs/skopeo.1.md

@@ -47,13 +47,10 @@ Most commands refer to container images, using a _transport_`:`_details_ format.
   **oci-archive:**_path_**:**_tag_
   An image _tag_ in a tar archive compliant with "Open Container Image Layout Specification" at _path_.
 
-See [containers-transports(5)](https://github.com/containers/image/blob/main/docs/containers-transports.5.md) for details.
+See [containers-transports(5)](https://github.com/containers/image/blob/master/docs/containers-transports.5.md) for details.
 
 ## OPTIONS
 
-These options should be placed before the subcommand name.
-Individual subcommands have their own options.
-
 **--command-timeout** _duration_
 
 Timeout for the command execution.
@@ -104,33 +101,23 @@ Print the version number
 | ----------------------------------------- | ------------------------------------------------------------------------------ |
 | [skopeo-copy(1)](skopeo-copy.1.md)        | Copy an image (manifest, filesystem layers, signatures) from one location to another. |
 | [skopeo-delete(1)](skopeo-delete.1.md)    | Mark the _image-name_ for later deletion by the registry's garbage collector.  |
-| [skopeo-generate-sigstore-key(1)](skopeo-generate-sigstore-key.1.md)    | Generate a sigstore public/private key pair.  |
 | [skopeo-inspect(1)](skopeo-inspect.1.md)  | Return low-level information about _image-name_ in a registry.                 |
-| [skopeo-list-tags(1)](skopeo-list-tags.1.md)  | List image names in a transport-specific collection of images.|
+| [skopeo-list-tags(1)](skopeo-list-tags.1.md)  | List tags in the transport-specific image repository.                      |
 | [skopeo-login(1)](skopeo-login.1.md)  | Login to a container registry. |
 | [skopeo-logout(1)](skopeo-logout.1.md)  | Logout of a container registry. |
 | [skopeo-manifest-digest(1)](skopeo-manifest-digest.1.md)    | Compute a manifest digest for a manifest-file and write it to standard output. |
-| [skopeo-standalone-sign(1)](skopeo-standalone-sign.1.md)    | Debugging tool - Sign an image locally without uploading.    |
-| [skopeo-standalone-verify(1)](skopeo-standalone-verify.1.md)| Debugging tool - Verify an image signature from local files. |
-| [skopeo-sync(1)](skopeo-sync.1.md)| Synchronize images between registry repositories and local directories.                |
-
-## EXIT STATUS
-`skopeo` exits with status 0 on success, non-zero on error.
-
-Details about the exit statuses:
-
-**1** Generic error, details can be found in the error message.
-
-**2** The input image cannot be found. Note that this is best effort and for remote registries the status often cannot be reliably reported.
+| [skopeo-standalone-sign(1)](skopeo-standalone-sign.1.md)    | Debugging tool - Publish and sign an image in one step.      |
+| [skopeo-standalone-verify(1)](skopeo-standalone-verify.1.md)| Verify an image signature.                                   |
+| [skopeo-sync(1)](skopeo-sync.1.md)| Synchronize images between container registries and local directories.                 |
 
 ## FILES
   **/etc/containers/policy.json**
   Default trust policy file, if **--policy** is not specified.
-  The policy format is documented in [containers-policy.json(5)](https://github.com/containers/image/blob/main/docs/containers-policy.json.5.md) .
+  The policy format is documented in [containers-policy.json(5)](https://github.com/containers/image/blob/master/docs/containers-policy.json.5.md) .
 
   **/etc/containers/registries.d**
   Default directory containing registry configuration, if **--registries.d** is not specified.
-  The contents of this directory are documented in [containers-registries.d(5)](https://github.com/containers/image/blob/main/docs/containers-registries.d.5.md).
+  The contents of this directory are documented in [containers-policy.json(5)](https://github.com/containers/image/blob/master/docs/containers-policy.json.5.md).
 
 ## SEE ALSO
 skopeo-login(1), docker-login(1), containers-auth.json(5), containers-storage.conf(5), containers-policy.json(5), containers-transports(5)

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go.mod

@@ -1,139 +1,103 @@
 module github.com/containers/skopeo
 
-// Minimum required golang version
-go 1.22.6
-
-// Warning: Ensure the "go" and "toolchain" versions match exactly to prevent unwanted auto-updates
+go 1.17
 
 require (
-	github.com/Masterminds/semver/v3 v3.3.0
-	github.com/containers/common v0.61.0
-	github.com/containers/image/v5 v5.33.0
-	github.com/containers/ocicrypt v1.2.0
-	github.com/containers/storage v1.56.0
-	github.com/docker/distribution v2.8.3+incompatible
-	github.com/moby/sys/capability v0.3.0
+	github.com/containers/common v0.47.4
+	github.com/containers/image/v5 v5.19.1
+	github.com/containers/ocicrypt v1.1.2
+	github.com/containers/storage v1.38.2
+	github.com/docker/docker v20.10.12+incompatible
 	github.com/opencontainers/go-digest v1.0.0
-	github.com/opencontainers/image-spec v1.1.0
+	github.com/opencontainers/image-spec v1.0.3-0.20211202193544-a5463b7f9c84
 	github.com/opencontainers/image-tools v1.0.0-rc3
-	github.com/sirupsen/logrus v1.9.3
-	github.com/spf13/cobra v1.8.1
+	github.com/pkg/errors v0.9.1
+	github.com/sirupsen/logrus v1.8.1
+	github.com/spf13/cobra v1.3.0
 	github.com/spf13/pflag v1.0.5
-	github.com/stretchr/testify v1.9.0
-	golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c
-	golang.org/x/term v0.26.0
-	gopkg.in/yaml.v3 v3.0.1
+	github.com/stretchr/testify v1.7.0
+	github.com/syndtr/gocapability v0.0.0-20200815063812-42c35b437635
+	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c
+	gopkg.in/yaml.v2 v2.4.0
 )
 
 require (
-	dario.cat/mergo v1.0.1 // indirect
-	github.com/BurntSushi/toml v1.4.0 // indirect
-	github.com/Microsoft/go-winio v0.6.2 // indirect
-	github.com/Microsoft/hcsshim v0.12.9 // indirect
+	github.com/BurntSushi/toml v1.0.0 // indirect
+	github.com/Microsoft/go-winio v0.5.1 // indirect
+	github.com/Microsoft/hcsshim v0.9.2 // indirect
 	github.com/VividCortex/ewma v1.2.0 // indirect
 	github.com/acarl005/stripansi v0.0.0-20180116102854-5a71ef0e047d // indirect
-	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
-	github.com/containerd/cgroups/v3 v3.0.3 // indirect
-	github.com/containerd/errdefs v0.3.0 // indirect
-	github.com/containerd/errdefs/pkg v0.3.0 // indirect
-	github.com/containerd/stargz-snapshotter/estargz v0.15.1 // indirect
-	github.com/containerd/typeurl/v2 v2.2.0 // indirect
-	github.com/containers/libtrust v0.0.0-20230121012942-c1716e8a8d01 // indirect
-	github.com/coreos/go-oidc/v3 v3.11.0 // indirect
-	github.com/cyberphone/json-canonicalization v0.0.0-20231217050601-ba74d44ecf5f // indirect
-	github.com/cyphar/filepath-securejoin v0.3.4 // indirect
-	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
-	github.com/distribution/reference v0.6.0 // indirect
-	github.com/docker/docker v27.3.1+incompatible // indirect
-	github.com/docker/docker-credential-helpers v0.8.2 // indirect
-	github.com/docker/go-connections v0.5.0 // indirect
-	github.com/docker/go-units v0.5.0 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/containerd/cgroups v1.0.1 // indirect
+	github.com/containerd/containerd v1.5.9 // indirect
+	github.com/containerd/stargz-snapshotter/estargz v0.11.0 // indirect
+	github.com/containers/libtrust v0.0.0-20190913040956-14b96171aa3b // indirect
+	github.com/cyphar/filepath-securejoin v0.2.3 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/docker/distribution v2.8.0+incompatible // indirect
+	github.com/docker/docker-credential-helpers v0.6.4 // indirect
+	github.com/docker/go-connections v0.4.0 // indirect
+	github.com/docker/go-metrics v0.0.1 // indirect
+	github.com/docker/go-units v0.4.0 // indirect
 	github.com/dsnet/compress v0.0.2-0.20210315054119-f66993602bf5 // indirect
-	github.com/felixge/httpsnoop v1.0.4 // indirect
-	github.com/go-jose/go-jose/v3 v3.0.3 // indirect
-	github.com/go-jose/go-jose/v4 v4.0.4 // indirect
-	github.com/go-logr/logr v1.4.2 // indirect
-	github.com/go-logr/stdr v1.2.2 // indirect
-	github.com/go-openapi/analysis v0.23.0 // indirect
-	github.com/go-openapi/errors v0.22.0 // indirect
-	github.com/go-openapi/jsonpointer v0.21.0 // indirect
-	github.com/go-openapi/jsonreference v0.21.0 // indirect
-	github.com/go-openapi/loads v0.22.0 // indirect
-	github.com/go-openapi/runtime v0.28.0 // indirect
-	github.com/go-openapi/spec v0.21.0 // indirect
-	github.com/go-openapi/strfmt v0.23.0 // indirect
-	github.com/go-openapi/swag v0.23.0 // indirect
-	github.com/go-openapi/validate v0.24.0 // indirect
+	github.com/ghodss/yaml v1.0.0 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
-	github.com/golang/protobuf v1.5.4 // indirect
-	github.com/google/go-containerregistry v0.20.2 // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/google/go-intervals v0.0.2 // indirect
-	github.com/google/uuid v1.6.0 // indirect
-	github.com/gorilla/mux v1.8.1 // indirect
-	github.com/hashicorp/errwrap v1.1.0 // indirect
-	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/gorilla/mux v1.8.0 // indirect
+	github.com/hashicorp/errwrap v1.0.0 // indirect
 	github.com/hashicorp/go-multierror v1.1.1 // indirect
-	github.com/hashicorp/go-retryablehttp v0.7.7 // indirect
-	github.com/inconshreveable/mousetrap v1.1.0 // indirect
-	github.com/josharian/intern v1.0.0 // indirect
+	github.com/imdario/mergo v0.3.12 // indirect
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/klauspost/compress v1.17.11 // indirect
-	github.com/klauspost/pgzip v1.2.6 // indirect
-	github.com/letsencrypt/boulder v0.0.0-20240620165639-de9c06129bec // indirect
-	github.com/mailru/easyjson v0.7.7 // indirect
-	github.com/mattn/go-runewidth v0.0.16 // indirect
-	github.com/mattn/go-sqlite3 v1.14.24 // indirect
-	github.com/miekg/pkcs11 v1.1.1 // indirect
-	github.com/mistifyio/go-zfs/v3 v3.0.1 // indirect
-	github.com/mitchellh/mapstructure v1.5.0 // indirect
-	github.com/moby/docker-image-spec v1.3.1 // indirect
-	github.com/moby/sys/mountinfo v0.7.2 // indirect
-	github.com/moby/sys/user v0.3.0 // indirect
+	github.com/klauspost/compress v1.14.2 // indirect
+	github.com/klauspost/pgzip v1.2.5 // indirect
+	github.com/kr/pretty v0.2.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/mattn/go-runewidth v0.0.13 // indirect
+	github.com/mattn/go-shellwords v1.0.12 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
+	github.com/miekg/pkcs11 v1.0.3 // indirect
+	github.com/mistifyio/go-zfs v2.1.2-0.20190413222219-f784269be439+incompatible // indirect
+	github.com/moby/sys/mountinfo v0.5.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/oklog/ulid v1.3.1 // indirect
-	github.com/opencontainers/runtime-spec v1.2.0 // indirect
-	github.com/opencontainers/selinux v1.11.1 // indirect
-	github.com/opentracing/opentracing-go v1.2.0 // indirect
-	github.com/ostreedev/ostree-go v0.0.0-20210805093236-719684c64e4f // indirect
-	github.com/pkg/errors v0.9.1 // indirect
-	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
-	github.com/proglottis/gpgme v0.1.3 // indirect
-	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/opencontainers/runc v1.1.0 // indirect
+	github.com/opencontainers/runtime-spec v1.0.3-0.20210326190908-1c3f411f0417 // indirect
+	github.com/opencontainers/selinux v1.10.0 // indirect
+	github.com/ostreedev/ostree-go v0.0.0-20190702140239-759a8c1ac913 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/proglottis/gpgme v0.1.1 // indirect
+	github.com/prometheus/client_golang v1.11.1 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.26.0 // indirect
+	github.com/prometheus/procfs v0.6.0 // indirect
+	github.com/rivo/uniseg v0.2.0 // indirect
 	github.com/russross/blackfriday v2.0.0+incompatible // indirect
-	github.com/secure-systems-lab/go-securesystemslib v0.8.0 // indirect
-	github.com/segmentio/ksuid v1.0.4 // indirect
-	github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
-	github.com/sigstore/fulcio v1.6.4 // indirect
-	github.com/sigstore/rekor v1.3.6 // indirect
-	github.com/sigstore/sigstore v1.8.9 // indirect
-	github.com/skratchdot/open-golang v0.0.0-20200116055534-eef842397966 // indirect
-	github.com/stefanberger/go-pkcs11uri v0.0.0-20230803200340-78284954bff6 // indirect
-	github.com/sylabs/sif/v2 v2.19.1 // indirect
-	github.com/tchap/go-patricia/v2 v2.3.1 // indirect
-	github.com/titanous/rocacheck v0.0.0-20171023193734-afe73141d399 // indirect
-	github.com/ulikunitz/xz v0.5.12 // indirect
-	github.com/vbatts/tar-split v0.11.6 // indirect
-	github.com/vbauerster/mpb/v8 v8.8.3 // indirect
-	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect
+	github.com/stefanberger/go-pkcs11uri v0.0.0-20201008174630-78d3cae3a980 // indirect
+	github.com/sylabs/sif/v2 v2.3.1 // indirect
+	github.com/tchap/go-patricia v2.3.0+incompatible // indirect
+	github.com/ulikunitz/xz v0.5.10 // indirect
+	github.com/vbatts/tar-split v0.11.2 // indirect
+	github.com/vbauerster/mpb/v7 v7.3.2 // indirect
+	github.com/xeipuuv/gojsonpointer v0.0.0-20190809123943-df4f5c81cb3b // indirect
 	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
 	github.com/xeipuuv/gojsonschema v1.2.0 // indirect
-	go.mongodb.org/mongo-driver v1.14.0 // indirect
-	go.mozilla.org/pkcs7 v0.0.0-20210826202110-33d05740a352 // indirect
-	go.opencensus.io v0.24.0 // indirect
-	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.53.0 // indirect
-	go.opentelemetry.io/otel v1.28.0 // indirect
-	go.opentelemetry.io/otel/metric v1.28.0 // indirect
-	go.opentelemetry.io/otel/trace v1.28.0 // indirect
-	golang.org/x/crypto v0.29.0 // indirect
-	golang.org/x/mod v0.21.0 // indirect
-	golang.org/x/net v0.30.0 // indirect
-	golang.org/x/oauth2 v0.23.0 // indirect
-	golang.org/x/sync v0.9.0 // indirect
-	golang.org/x/sys v0.27.0 // indirect
-	golang.org/x/text v0.20.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 // indirect
-	google.golang.org/grpc v1.67.0 // indirect
-	google.golang.org/protobuf v1.35.1 // indirect
+	go.etcd.io/bbolt v1.3.6 // indirect
+	go.mozilla.org/pkcs7 v0.0.0-20200128120323-432b2356ecb1 // indirect
+	go.opencensus.io v0.23.0 // indirect
+	golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3 // indirect
+	golang.org/x/net v0.7.0 // indirect
+	golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4 // indirect
+	golang.org/x/sys v0.5.0 // indirect
+	golang.org/x/term v0.5.0 // indirect
+	golang.org/x/text v0.7.0 // indirect
+	google.golang.org/genproto v0.0.0-20211208223120-3a66f561d7aa // indirect
+	google.golang.org/grpc v1.42.0 // indirect
+	google.golang.org/protobuf v1.27.1 // indirect
+	gopkg.in/square/go-jose.v2 v2.5.1 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 )

hack/btrfs_installed_tag.sh

@@ -1,5 +1,5 @@
-#!/usr/bin/env bash
-${CPP:-${CC:-cc} -E} ${CPPFLAGS} - > /dev/null 2> /dev/null << EOF
+#!/bin/bash
+cc -E - > /dev/null 2> /dev/null << EOF
 #include <btrfs/ioctl.h>
 EOF
 if test $? -ne 0 ; then

hack/btrfs_tag.sh

@@ -1,5 +1,5 @@
-#!/usr/bin/env bash
-${CPP:-${CC:-cc} -E} ${CPPFLAGS} - > /dev/null 2> /dev/null << EOF
+#!/bin/bash
+cc -E - > /dev/null 2> /dev/null << EOF
 #include <btrfs/version.h>
 EOF
 if test $? -ne 0 ; then

hack/get_fqin.sh

@@ -29,6 +29,6 @@ $CONTAINER_RUNTIME run --rm \
     --entrypoint=/usr/share/automation/bin/cirrus-ci_env.py \
     quay.io/libpod/get_ci_vm:latest \
     --envs="Skopeo Test" /src/.cirrus.yml | \
-    grep -E -m1 '^SKOPEO_CIDEV_CONTAINER_FQIN' | \
+    egrep -m1 '^SKOPEO_CIDEV_CONTAINER_FQIN' | \
     awk -F "=" -e '{print $2}' | \
     tr -d \'\"

hack/libdm_tag.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+tmpdir="$PWD/tmp.$RANDOM"
+mkdir -p "$tmpdir"
+trap 'rm -fr "$tmpdir"' EXIT
+cc -c -o "$tmpdir"/libdm_tag.o -x c - > /dev/null 2> /dev/null << EOF
+#include <libdevmapper.h>
+int main() {
+	struct dm_task *task;
+	return 0;
+}
+EOF
+if test $? -ne 0 ; then
+	echo libdm_no_deferred_remove
+fi

hack/libsubid_tag.sh

@@ -5,17 +5,11 @@ fi
 tmpdir="$PWD/tmp.$RANDOM"
 mkdir -p "$tmpdir"
 trap 'rm -fr "$tmpdir"' EXIT
-${CC:-cc} ${CPPFLAGS} ${CFLAGS} -o "$tmpdir"/libsubid_tag -x c - -l subid \
-	  > /dev/null 2> /dev/null << EOF
+cc -o "$tmpdir"/libsubid_tag -l subid -x c - > /dev/null 2> /dev/null << EOF
 #include <shadow/subid.h>
-#include <stdlib.h>
 int main() {
 	struct subid_range *ranges = NULL;
-#if SUBID_ABI_MAJOR >= 4
-	subid_get_uid_ranges("root", &ranges);
-#else
 	get_subuid_ranges("root", &ranges);
-#endif
 	free(ranges);
 	return 0;
 }

hack/make.sh

@@ -0,0 +1,92 @@
+#!/usr/bin/env bash
+set -e
+
+# This script builds various binary from a checkout of the skopeo
+# source code. DO NOT CALL THIS SCRIPT DIRECTLY.
+#
+# Requirements:
+# - The current directory should be a checkout of the skopeo source code
+#   (https://github.com/containers/skopeo). Whatever version is checked out
+#   will be built.
+# - The script is intended to be run inside the container specified
+#   in the output of hack/get_fqin.sh
+# - The right way to call this script is to invoke "make" from
+#   your checkout of the skopeo repository.
+#   the Makefile will do a "docker build -t skopeo ." and then
+#   "docker run hack/make.sh" in the resulting image.
+#
+
+set -o pipefail
+
+export SKOPEO_PKG='github.com/containers/skopeo'
+export SCRIPTDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+export MAKEDIR="$SCRIPTDIR/make"
+
+# Set this to 1 to enable installation/modification of environment/services
+export SKOPEO_CONTAINER_TESTS=${SKOPEO_CONTAINER_TESTS:-0}
+
+if [[ "$SKOPEO_CONTAINER_TESTS" == "0" ]] && [[ "$CI" != "true" ]]; then
+    (
+    echo "***************************************************************"
+    echo "WARNING: Executing tests directly on the local development"
+    echo "         host is highly discouraged.  Many important items"
+    echo "         will be skipped.  For manual execution, please utilize"
+    echo "         the Makefile targets WITHOUT the '-local' suffix."
+    echo "***************************************************************"
+    ) > /dev/stderr
+    sleep 5s
+fi
+
+echo
+
+# List of bundles to create when no argument is passed
+# TODO(runcom): these are the one left from Docker...for now
+# test-unit
+# validate-dco
+# cover
+DEFAULT_BUNDLES=(
+	validate-gofmt
+	validate-lint
+	validate-vet
+	validate-git-marks
+
+	test-integration
+)
+
+# Go module support: set `-mod=vendor` to use the vendored sources
+# See also the top-level Makefile.
+mod_vendor=
+if go help mod >/dev/null 2>&1; then
+  export GO111MODULE=on
+  mod_vendor='-mod=vendor'
+fi
+
+go_test_dir() {
+	dir=$1
+	(
+		echo '+ go test' $mod_vendor $TESTFLAGS ${BUILDTAGS:+-tags "$BUILDTAGS"} "${SKOPEO_PKG}${dir#.}"
+		cd "$dir"
+		export DEST="$ABS_DEST" # we're in a subshell, so this is safe -- our integration-cli tests need DEST, and "cd" screws it up
+		go test $mod_vendor $TESTFLAGS ${BUILDTAGS:+-tags "$BUILDTAGS"}
+	)
+}
+
+bundle() {
+	local bundle="$1"; shift
+	echo "---> Making bundle: $(basename "$bundle")"
+	source "$SCRIPTDIR/make/$bundle" "$@"
+}
+
+main() {
+	if [ $# -lt 1 ]; then
+		bundles=(${DEFAULT_BUNDLES[@]})
+	else
+		bundles=($@)
+	fi
+	for bundle in ${bundles[@]}; do
+		bundle "$bundle"
+		echo
+	done
+}
+
+main "$@"

hack/make/.validate

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+if [ -z "$VALIDATE_UPSTREAM" ]; then
+	# this is kind of an expensive check, so let's not do this twice if we
+	# are running more than one validate bundlescript
+	
+	VALIDATE_REPO='https://github.com/containers/skopeo.git'
+	VALIDATE_BRANCH='main'
+	
+	if [ "$TRAVIS" = 'true' -a "$TRAVIS_PULL_REQUEST" != 'false' ]; then
+		VALIDATE_REPO="https://github.com/${TRAVIS_REPO_SLUG}.git"
+		VALIDATE_BRANCH="${TRAVIS_BRANCH}"
+	fi
+	
+	VALIDATE_HEAD="$(git rev-parse --verify HEAD)"
+	
+	git fetch -q "$VALIDATE_REPO" "refs/heads/$VALIDATE_BRANCH"
+	VALIDATE_UPSTREAM="$(git rev-parse --verify FETCH_HEAD)"
+	
+	VALIDATE_COMMIT_LOG="$VALIDATE_UPSTREAM..$VALIDATE_HEAD"
+	VALIDATE_COMMIT_DIFF="$VALIDATE_UPSTREAM...$VALIDATE_HEAD"
+	
+	validate_diff() {
+		git diff "$VALIDATE_UPSTREAM" "$@"
+	}
+	validate_log() {
+		if [ "$VALIDATE_UPSTREAM" != "$VALIDATE_HEAD" ]; then
+			git log "$VALIDATE_COMMIT_LOG" "$@"
+		fi
+	}
+fi

hack/make/test-integration

@@ -0,0 +1,12 @@
+#!/bin/bash
+set -e
+
+bundle_test_integration() {
+	go_test_dir ./integration
+}
+
+# subshell so that we can export PATH without breaking other things
+(
+	make PREFIX=/usr install
+	bundle_test_integration
+) 2>&1

hack/make/test-system

@@ -0,0 +1,24 @@
+#!/bin/bash
+set -e
+
+# These tests can run in/outside of a container.  However,
+# not all storage drivers are supported in a container
+# environment.  Detect this and setup storage when
+# running in a container.
+if ((SKOPEO_CONTAINER_TESTS)) && [[ -r /etc/containers/storage.conf ]]; then
+    sed -i \
+        -e 's/^driver\s*=.*/driver = "vfs"/' \
+        -e 's/^mountopt/#mountopt/' \
+        /etc/containers/storage.conf
+elif ((SKOPEO_CONTAINER_TESTS)); then
+    cat >> /etc/containers/storage.conf << EOF
+[storage]
+driver = "vfs"
+EOF
+fi
+
+# Build skopeo, install into /usr/bin
+make PREFIX=/usr install
+
+# Run tests
+SKOPEO_BINARY=/usr/bin/skopeo bats --tap systemtest

hack/make/validate-git-marks

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+
+source "$(dirname "$BASH_SOURCE")/.validate"
+
+# folders=$(find * -type d | egrep -v '^Godeps|bundles|.git')
+
+IFS=$'\n'
+files=( $(validate_diff --diff-filter=ACMR --name-only -- '*' | grep -v '^vendor/' || true) )
+unset IFS
+
+badFiles=()
+for f in "${files[@]}"; do
+    if [ $(grep -r "^<<<<<<<" $f) ]; then
+        badFiles+=( "$f" )
+        continue
+    fi
+
+    if [ $(grep -r "^>>>>>>>" $f) ]; then
+        badFiles+=( "$f" )
+        continue
+    fi
+
+    if [ $(grep -r "^=======$" $f) ]; then
+        badFiles+=( "$f" )
+        continue
+    fi
+    set -e
+done
+
+
+if [ ${#badFiles[@]} -eq 0 ]; then
+	echo 'Congratulations!  There is no conflict.'
+else
+	{
+		echo "There is trace of conflict(s) in the following files :"
+		for f in "${badFiles[@]}"; do
+			echo " - $f"
+		done
+		echo
+		echo 'Please fix the conflict(s) commit the result.'
+		echo
+	} >&2
+	false
+fi

hack/make/validate-gofmt

@@ -1,7 +1,9 @@
 #!/bin/bash
 
+source "$(dirname "$BASH_SOURCE")/.validate"
+
 IFS=$'\n'
-files=( $(find . -name '*.go' | grep -v '^./vendor/' | sort || true) )
+files=( $(validate_diff --diff-filter=ACMR --name-only -- '*.go' | grep -v '^vendor/' || true) )
 unset IFS
 
 badFiles=()
@@ -23,5 +25,5 @@ else
 		echo 'Please reformat the above files using "gofmt -s -w" and commit the result.'
 		echo
 	} >&2
-	exit 1
+	false
 fi

hack/make/validate-lint

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+source "$(dirname "$BASH_SOURCE")/.validate"
+
+# We will eventually get to the point where packages should be the complete list
+# of subpackages, vendoring excluded, as given by:
+#
+IFS=$'\n'
+files=( $(validate_diff --diff-filter=ACMR --name-only -- '*.go' | grep -v '^vendor/\|^integration' || true) )
+unset IFS
+
+errors=()
+for f in "${files[@]}"; do
+	failedLint=$(golint "$f")
+	if [ "$failedLint" ]; then
+		errors+=( "$failedLint" )
+	fi
+done
+
+if [ ${#errors[@]} -eq 0 ]; then
+	echo 'Congratulations!  All Go source files have been linted.'
+else
+	{
+		echo "Errors from golint:"
+		for err in "${errors[@]}"; do
+			echo "$err"
+		done
+		echo
+		echo 'Please fix the above errors. You can test via "golint" and commit the result.'
+		echo
+	} >&2
+	false
+fi

hack/make/validate-vet

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-errors=$(go vet -tags="${BUILDTAGS}" ./... 2>&1)
+errors=$(go vet -tags="${BUILDTAGS}" $mod_vendor $(go list $mod_vendor -e ./...))
 
 if [ -z "$errors" ]; then
 	echo 'Congratulations!  All Go source files have been vetted.'
@@ -12,5 +12,5 @@ else
 		echo 'Please fix the above errors. You can test via "go vet" and commit the result.'
 		echo
 	} >&2
-	exit 1
+	false
 fi

hack/man-page-checker

@@ -29,7 +29,7 @@ rc=0
 # for a given skopeo-foo.1.md, the NAME should be 'skopeo-foo'
 for md in *.1.md;do
     # Read the first line after '## NAME'
-    name=$(grep -E -A1 '^## NAME' $md|tail -1|awk '{print $1}' | tr -d \\\\)
+    name=$(egrep -A1 '^## NAME' $md|tail -1|awk '{print $1}' | tr -d \\\\)
 
     expect=$(basename $md .1.md)
     if [ "$name" != "$expect" ]; then
@@ -45,7 +45,7 @@ done
 # Make sure the descriptive text in skopeo-foo.1.md matches the one
 # in the table in skopeo.1.md.
 for md in $(ls -1 *-*.1.md);do
-    desc=$(grep -E -A1 '^## NAME' $md|tail -1|sed -E -e 's/^skopeo[^[:space:]]+ - //')
+    desc=$(egrep -A1 '^## NAME' $md|tail -1|sed -E -e 's/^skopeo[^[:space:]]+ - //')
 
     # Find the descriptive text in the main skopeo man page.
     parent=skopeo.1.md
@@ -112,7 +112,7 @@ function compare_usage() {
 #
 # Make sure the SYNOPSIS line in skopeo-foo.1.md reads '**skopeo foo** ...'
 for md in *.1.md;do
-    synopsis=$(grep -E -A1 '^#* SYNOPSIS' $md|tail -1)
+    synopsis=$(egrep -A1 '^#* SYNOPSIS' $md|tail -1)
 
     # Command name must be bracketed by double asterisks; options and
     # arguments are bracketed by single ones.

hack/test-integration.sh

@@ -1,8 +0,0 @@
-#!/bin/bash
-set -e
-
-make PREFIX=/usr install
-
-echo "cd ./integration;" go test $TESTFLAGS ${BUILDTAGS:+-tags "$BUILDTAGS"}
-cd ./integration
-go test $TESTFLAGS ${BUILDTAGS:+-tags "$BUILDTAGS"}

hack/test-system.sh

@@ -1,44 +0,0 @@
-#!/bin/bash
-set -e
-
-# These tests can run in/outside of a container.  However,
-# not all storage drivers are supported in a container
-# environment.  Detect this and setup storage when
-# running in a container.
-#
-# Paradoxically (FIXME: clean this up), SKOPEO_CONTAINER_TESTS is set
-# both inside a container and without a container (in a CI VM); it actually means
-# "it is safe to destructively modify the system for tests".
-#
-# On a CI VM, we can just use Podman as it is already configured; the changes below,
-# to use VFS, are necessary only inside a container, because overlay-inside-overlay
-# does not work. So, make these changes conditional on both
-# SKOPEO_CONTAINER_TESTS (for acceptability to do destructive modification) and !CI
-# (for necessity to adjust for in-container operation)
-if ((SKOPEO_CONTAINER_TESTS)) && [[ "$CI" != true ]]; then
-    if [[ -r /etc/containers/storage.conf ]]; then
-        echo "MODIFYING existing storage.conf"
-        sed -i \
-            -e 's/^driver\s*=.*/driver = "vfs"/' \
-            -e 's/^mountopt/#mountopt/' \
-            /etc/containers/storage.conf
-    else
-        echo "CREATING NEW storage.conf"
-        cat >> /etc/containers/storage.conf << EOF
-[storage]
-driver = "vfs"
-runroot = "/run/containers/storage"
-graphroot = "/var/lib/containers/storage"
-EOF
-    fi
-    # The logic of finding the relevant storage.conf file is convoluted
-    # and in effect differs between Skopeo and Podman, at least in some versions;
-    # explicitly point at the file we want to use to hopefully avoid that.
-    export CONTAINERS_STORAGE_CONF=/etc/containers/storage.conf
-fi
-
-# Build skopeo, install into /usr/bin
-make PREFIX=/usr install
-
-# Run tests
-SKOPEO_BINARY=/usr/bin/skopeo bats --tap systemtest

hack/tree_status.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash
 set -e
 
 STATUS=$(git status --porcelain)

hack/validate-git-marks.sh

@@ -1,30 +0,0 @@
-#!/usr/bin/env bash
-
-IFS=$'\n'
-files=( $(git ls-tree -r HEAD --name-only | grep -v '^vendor/' || true) )
-unset IFS
-
-badFiles=()
-for f in "${files[@]}"; do
-    if [ $(grep -r "^\(<<<<<<<\|>>>>>>>\|^=======$\)" $f) ]; then
-        badFiles+=( "$f" )
-        continue
-    fi
-    set -e
-done
-
-
-if [ ${#badFiles[@]} -eq 0 ]; then
-	echo 'Congratulations!  There is no conflict.'
-else
-	{
-		echo "There is trace of conflict(s) in the following files :"
-		for f in "${badFiles[@]}"; do
-			echo " - $f"
-		done
-		echo
-		echo 'Please fix the conflict(s) commit the result.'
-		echo
-	} >&2
-	exit 1
-fi

hack/validate-lint.sh

@@ -1,16 +0,0 @@
-#!/bin/bash
-
-errors=$($GOBIN/golangci-lint run --build-tags "${BUILDTAGS}" 2>&1)
-
-if [ -z "$errors" ]; then
-	echo 'Congratulations!  All Go source files have been linted.'
-else
-	{
-		echo "Errors from golangci-lint:"
-		echo "$errors"
-		echo
-		echo 'Please fix the above errors. You can test via "golangci-lint" and commit the result.'
-		echo
-	} >&2
-	exit 1
-fi

hack/warn-destructive-tests.sh

@@ -1,17 +0,0 @@
-#!/usr/bin/env bash
-set -e
-
-# Set this to 1 to enable installation/modification of environment/services
-export SKOPEO_CONTAINER_TESTS=${SKOPEO_CONTAINER_TESTS:-0}
-
-if [[ "$SKOPEO_CONTAINER_TESTS" == "0" ]] && [[ "$CI" != "true" ]]; then
-    (
-    echo "***************************************************************"
-    echo "WARNING: Executing tests directly on the local development"
-    echo "         host is highly discouraged.  Many important items"
-    echo "         will be skipped.  For manual execution, please utilize"
-    echo "         the Makefile targets WITHOUT the '-local' suffix."
-    echo "***************************************************************"
-    ) > /dev/stderr
-    sleep 5
-fi

install.md

@@ -1,8 +1,7 @@
 # Installing Skopeo
 
 ## Distribution Packages
-`skopeo` may already be packaged in your distribution. This document lists the
-installation steps for many distros, along with their information and support links.
+`skopeo` may already be packaged in your distribution.
 
 ### Fedora
 
@@ -10,67 +9,30 @@ installation steps for many distros, along with their information and support li
 sudo dnf -y install skopeo
 ```
 
-[Package Info](https://src.fedoraproject.org/rpms/skopeo) and
-[Bugzilla](https://bugzilla.redhat.com/buglist.cgi?bug_status=__open__&classification=Fedora&component=skopeo&product=Fedora)
-
-Fedora bugs can be reported on the Skopeo GitHub [Issues](https://github.com/containers/skopeo/issues) page.
-
-### RHEL / CentOS Stream ≥ 8
+### RHEL/CentOS ≥ 8 and CentOS Stream
 
 ```sh
 sudo dnf -y install skopeo
 ```
 
-If you are a RHEL customer, please reach out through the official RHEL support
-channels for any issues.
-
-CentOS Stream 9: [Package Info](https://gitlab.com/redhat/centos-stream/rpms/skopeo/-/tree/c9s) and
-[Bugzilla](https://bugzilla.redhat.com/buglist.cgi?bug_status=__open__&classification=Red%20Hat&component=skopeo&product=Red%20Hat%20Enterprise%20Linux%209&version=CentOS%20Stream)
-
-CentOS Stream 8: [Package Info](https://git.centos.org/rpms/skopeo/tree/c8s-stream-rhel8) and
-[Bugzilla](https://bugzilla.redhat.com/buglist.cgi?bug_status=__open__&classification=Red%20Hat&component=skopeo&product=Red%20Hat%20Enterprise%20Linux%208&version=CentOS%20Stream)
-
-
 ### RHEL/CentOS ≤ 7.x
 
 ```sh
 sudo yum -y install skopeo
 ```
 
-CentOS 7: [Package Repo](https://git.centos.org/rpms/skopeo/tree/c7-extras)
-
 ### openSUSE
 
 ```sh
 sudo zypper install skopeo
 ```
 
-[Package Info](https://software.opensuse.org/package/skopeo)
-
 ### Alpine
 
 ```sh
 sudo apk add skopeo
 ```
 
-[Package Info](https://pkgs.alpinelinux.org/packages?name=skopeo)
-
-### Gentoo
-
-```sh
-sudo emerge app-containers/skopeo
-```
-
-[Package Info](https://packages.gentoo.org/packages/app-containers/skopeo)
-
-### Arch Linux
-
-```sh
-sudo pacman -S skopeo
-```
-
-[Package Info](https://archlinux.org/packages/extra/x86_64/skopeo/)
-
 ### macOS
 
 ```sh
@@ -82,8 +44,6 @@ brew install skopeo
 $ nix-env -i skopeo
 ```
 
-[Package Info](https://search.nixos.org/packages?&show=skopeo&query=skopeo)
-
 ### Debian
 
 The skopeo package is available on [Bullseye](https://packages.debian.org/bullseye/skopeo),
@@ -95,8 +55,6 @@ sudo apt-get update
 sudo apt-get -y install skopeo
 ```
 
-[Package Info](https://packages.debian.org/stable/skopeo)
-
 ### Raspberry Pi OS arm64 (beta)
 
 Raspberry Pi OS uses the standard Debian's repositories,
@@ -115,13 +73,24 @@ sudo apt-get -y update
 sudo apt-get -y install skopeo
 ```
 
-[Package Info](https://packages.ubuntu.com/jammy/skopeo)
+The [Kubic project](https://build.opensuse.org/package/show/devel:kubic:libcontainers:stable/skopeo)
+provides packages for Ubuntu 20.04 (it should also work with direct derivatives like Pop!\_OS).
+
+```bash
+. /etc/os-release
+echo "deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_${VERSION_ID}/ /" | sudo tee /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
+curl -L https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_${VERSION_ID}/Release.key | sudo apt-key add -
+sudo apt-get update
+sudo apt-get -y upgrade
+sudo apt-get -y install skopeo
+```
 
 ### Windows
 Skopeo has not yet been packaged for Windows. There is an [open feature
 request](https://github.com/containers/skopeo/issues/715) and contributions are
 always welcome.
 
+
 ## Container Images
 
 Skopeo container images are available at `quay.io/skopeo/stable:latest`.
@@ -131,15 +100,14 @@ For example,
 podman run docker://quay.io/skopeo/stable:latest copy --help
 ```
 
-The skopeo container image build context and automation are
-located at [https://github.com/containers/image_build/tree/main/skopeo](https://github.com/containers/image_build/tree/main/skopeo)
+[Read more](./contrib/skopeoimage/README.md).
 
 
 ## Building from Source
 
 Otherwise, read on for building and installing it from source:
 
-To build the `skopeo` binary you need at least Go 1.22.
+To build the `skopeo` binary you need at least Go 1.12.
 
 There are two ways to build skopeo: in a container, or locally without a
 container. Choose the one which better matches your needs and environment.
@@ -157,12 +125,12 @@ Install the necessary dependencies:
 
 ```bash
 # Fedora:
-sudo dnf install gpgme-devel libassuan-devel btrfs-progs-devel
+sudo dnf install gpgme-devel libassuan-devel btrfs-progs-devel device-mapper-devel
 ```
 
 ```bash
 # Ubuntu (`libbtrfs-dev` requires Ubuntu 18.10 and above):
-sudo apt install libgpgme-dev libassuan-dev libbtrfs-dev pkg-config
+sudo apt install libgpgme-dev libassuan-dev libbtrfs-dev libdevmapper-dev pkg-config
 ```
 
 ```bash
@@ -172,12 +140,7 @@ brew install gpgme
 
 ```bash
 # openSUSE:
-sudo zypper install libgpgme-devel libbtrfs-devel glib2-devel
-```
-
-```bash
-# Arch Linux:
-sudo pacman -S base-devel gpgme btrfs-progs
+sudo zypper install libgpgme-devel device-mapper-devel libbtrfs-devel glib2-devel
 ```
 
 Make sure to clone this repository in your `GOPATH` - otherwise compilation fails.
@@ -195,22 +158,6 @@ document generation can be skipped by passing `DISABLE_DOCS=1`:
 DISABLE_DOCS=1 make
 ```
 
-#### Additional prerequisites
-
-In order to dynamically link against system libraries and avoid compilation errors the ```CGO_ENABLED='1'``` flag must be enabled. You can easily check by ```go env | grep CGO_ENABLED```.
-
-An alternative would be to set the `BUILDTAGS=containers_image_openpgp` (this removes the dependency on `libgpgme` and its companion libraries).
-
-### Cross-compilation
-
-For cross-building skopeo, use the command `make bin/skopeo.OS.ARCH`, where OS represents
-the target operating system and ARCH stands for the desired architecture. For instance,
-to build skopeo for RISC-V 64-bit Linux, execute:
-
-```bash
-make bin/skopeo.linux.riscv64
-```
-
 ### Building documentation
 
 To build the manual you will need go-md2man.
@@ -249,13 +196,6 @@ Building in a container is simpler, but more restrictive:
 $ make binary
 ```
 
-### Shell completion scripts
-
-Skopeo has shell completion scripts for bash, zsh, fish and powershell. They are installed as part of `make install`.
-You may have to restart your shell in order for them to take effect.
-
-For instructions to manually generate and load the scripts please see `skopeo completion --help`.
-
 ### Installation
 
 Finally, after the binary and documentation is built:
@@ -267,13 +207,20 @@ sudo make install
 ### Building a static binary
 
 There have been efforts in the past to produce and maintain static builds, but the maintainers prefer to run Skopeo using distro packages or within containers. This is because static builds of Skopeo tend to be unreliable and functionally restricted. Specifically:
-- Some features of Skopeo depend on non-Go libraries like `libgpgme`.
+- Some features of Skopeo depend on non-Go libraries like `libgpgme` and `libdevmapper`.
 - Generating static Go binaries uses native Go libraries, which don't support e.g. `.local` or LDAP-based name resolution.
 
 That being said, if you would like to build Skopeo statically, you might be able to do it by combining all the following steps.
 - Export environment variable `CGO_ENABLED=0` (disabling CGO causes Go to prefer native libraries when possible, instead of dynamically linking against system libraries).
-- Set the `BUILDTAGS=containers_image_openpgp` Make variable (this removes the dependency on `libgpgme` and its companion libraries).
-- Clear the `GO_DYN_FLAGS` Make variable if even a dependency on the ELF interpreter is undesirable.
+- Set the `BUILDTAGS=containers_image_openpgp` Make variable (this remove the dependency on `libgpgme` and its companion libraries).
+- Clear the `GO_DYN_FLAGS` Make variable (which otherwise seems to force the creation of a dynamic executable).
+
+The following command implements these steps to produce a static binary in the `bin` subdirectory of the repository:
+
+```bash
+docker run -v $PWD:/src -w /src -e CGO_ENABLED=0 golang \
+make BUILDTAGS=containers_image_openpgp GO_DYN_FLAGS=
+```
 
 Keep in mind that the resulting binary is unsupported and might crash randomly. Only use if you know what you're doing!
 

integration/blocked_test.go

@@ -1,34 +1,34 @@
 package main
 
+import (
+	"gopkg.in/check.v1"
+)
+
 const blockedRegistriesConf = "./fixtures/blocked-registries.conf"
 const blockedErrorRegex = `.*registry registry-blocked.com is blocked in .*`
 
-func (s *skopeoSuite) TestCopyBlockedSource() {
-	t := s.T()
-	assertSkopeoFails(t, blockedErrorRegex,
+func (s *SkopeoSuite) TestCopyBlockedSource(c *check.C) {
+	assertSkopeoFails(c, blockedErrorRegex,
 		"--registries-conf", blockedRegistriesConf, "copy",
 		"docker://registry-blocked.com/image:test",
 		"docker://registry-unblocked.com/image:test")
 }
 
-func (s *skopeoSuite) TestCopyBlockedDestination() {
-	t := s.T()
-	assertSkopeoFails(t, blockedErrorRegex,
+func (s *SkopeoSuite) TestCopyBlockedDestination(c *check.C) {
+	assertSkopeoFails(c, blockedErrorRegex,
 		"--registries-conf", blockedRegistriesConf, "copy",
 		"docker://registry-unblocked.com/image:test",
 		"docker://registry-blocked.com/image:test")
 }
 
-func (s *skopeoSuite) TestInspectBlocked() {
-	t := s.T()
-	assertSkopeoFails(t, blockedErrorRegex,
+func (s *SkopeoSuite) TestInspectBlocked(c *check.C) {
+	assertSkopeoFails(c, blockedErrorRegex,
 		"--registries-conf", blockedRegistriesConf, "inspect",
 		"docker://registry-blocked.com/image:test")
 }
 
-func (s *skopeoSuite) TestDeleteBlocked() {
-	t := s.T()
-	assertSkopeoFails(t, blockedErrorRegex,
+func (s *SkopeoSuite) TestDeleteBlocked(c *check.C) {
+	assertSkopeoFails(c, blockedErrorRegex,
 		"--registries-conf", blockedRegistriesConf, "delete",
 		"docker://registry-blocked.com/image:test")
 }

integration/check_test.go

@@ -6,9 +6,7 @@ import (
 	"testing"
 
 	"github.com/containers/skopeo/version"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-	"github.com/stretchr/testify/suite"
+	"gopkg.in/check.v1"
 )
 
 const (
@@ -16,104 +14,100 @@ const (
 	privateRegistryURL1 = "127.0.0.1:5001"
 )
 
-func TestSkopeo(t *testing.T) {
-	suite.Run(t, &skopeoSuite{})
+func Test(t *testing.T) {
+	check.TestingT(t)
 }
 
-type skopeoSuite struct {
-	suite.Suite
+func init() {
+	check.Suite(&SkopeoSuite{})
+}
+
+type SkopeoSuite struct {
 	regV2         *testRegistryV2
 	regV2WithAuth *testRegistryV2
 }
 
-var _ = suite.SetupAllSuite(&skopeoSuite{})
-var _ = suite.TearDownAllSuite(&skopeoSuite{})
-
-func (s *skopeoSuite) SetupSuite() {
-	t := s.T()
+func (s *SkopeoSuite) SetUpSuite(c *check.C) {
 	_, err := exec.LookPath(skopeoBinary)
-	require.NoError(t, err)
-	s.regV2 = setupRegistryV2At(t, privateRegistryURL0, false, false)
-	s.regV2WithAuth = setupRegistryV2At(t, privateRegistryURL1, true, false)
+	c.Assert(err, check.IsNil)
+	s.regV2 = setupRegistryV2At(c, privateRegistryURL0, false, false)
+	s.regV2WithAuth = setupRegistryV2At(c, privateRegistryURL1, true, false)
 }
 
-func (s *skopeoSuite) TearDownSuite() {
+func (s *SkopeoSuite) TearDownSuite(c *check.C) {
 	if s.regV2 != nil {
-		s.regV2.tearDown()
+		s.regV2.Close()
 	}
 	if s.regV2WithAuth != nil {
-		// cmd := exec.Command("docker", "logout", s.regV2WithAuth)
-		// require.Noerror(t, cmd.Run())
-		s.regV2WithAuth.tearDown()
+		//cmd := exec.Command("docker", "logout", s.regV2WithAuth)
+		//c.Assert(cmd.Run(), check.IsNil)
+		s.regV2WithAuth.Close()
 	}
 }
 
-func (s *skopeoSuite) TestVersion() {
-	t := s.T()
-	assertSkopeoSucceeds(t, fmt.Sprintf(".*%s version %s.*", skopeoBinary, version.Version),
-		"--version")
+// TODO like dockerCmd but much easier, just out,err
+//func skopeoCmd()
+
+func (s *SkopeoSuite) TestVersion(c *check.C) {
+	wanted := fmt.Sprintf(".*%s version %s.*", skopeoBinary, version.Version)
+	assertSkopeoSucceeds(c, wanted, "--version")
 }
 
-func (s *skopeoSuite) TestCanAuthToPrivateRegistryV2WithoutDockerCfg() {
-	t := s.T()
-	assertSkopeoFails(t, ".*manifest unknown.*",
-		"--tls-verify=false", "inspect", "--creds="+s.regV2WithAuth.username+":"+s.regV2WithAuth.password, fmt.Sprintf("docker://%s/busybox:latest", s.regV2WithAuth.url))
+func (s *SkopeoSuite) TestCanAuthToPrivateRegistryV2WithoutDockerCfg(c *check.C) {
+	wanted := ".*manifest unknown: manifest unknown.*"
+	assertSkopeoFails(c, wanted, "--tls-verify=false", "inspect", "--creds="+s.regV2WithAuth.username+":"+s.regV2WithAuth.password, fmt.Sprintf("docker://%s/busybox:latest", s.regV2WithAuth.url))
 }
 
-func (s *skopeoSuite) TestNeedAuthToPrivateRegistryV2WithoutDockerCfg() {
-	t := s.T()
-	assertSkopeoFails(t, ".*authentication required.*",
-		"--tls-verify=false", "inspect", fmt.Sprintf("docker://%s/busybox:latest", s.regV2WithAuth.url))
+func (s *SkopeoSuite) TestNeedAuthToPrivateRegistryV2WithoutDockerCfg(c *check.C) {
+	wanted := ".*unauthorized: authentication required.*"
+	assertSkopeoFails(c, wanted, "--tls-verify=false", "inspect", fmt.Sprintf("docker://%s/busybox:latest", s.regV2WithAuth.url))
 }
 
-func (s *skopeoSuite) TestCertDirInsteadOfCertPath() {
-	t := s.T()
-	assertSkopeoFails(t, ".*unknown flag: --cert-path.*",
-		"--tls-verify=false", "inspect", fmt.Sprintf("docker://%s/busybox:latest", s.regV2WithAuth.url), "--cert-path=/")
-	assertSkopeoFails(t, ".*authentication required.*",
-		"--tls-verify=false", "inspect", fmt.Sprintf("docker://%s/busybox:latest", s.regV2WithAuth.url), "--cert-dir=/etc/docker/certs.d/")
+func (s *SkopeoSuite) TestCertDirInsteadOfCertPath(c *check.C) {
+	wanted := ".*unknown flag: --cert-path.*"
+	assertSkopeoFails(c, wanted, "--tls-verify=false", "inspect", fmt.Sprintf("docker://%s/busybox:latest", s.regV2WithAuth.url), "--cert-path=/")
+	wanted = ".*unauthorized: authentication required.*"
+	assertSkopeoFails(c, wanted, "--tls-verify=false", "inspect", fmt.Sprintf("docker://%s/busybox:latest", s.regV2WithAuth.url), "--cert-dir=/etc/docker/certs.d/")
 }
 
 // TODO(runcom): as soon as we can push to registries ensure you can inspect here
 // not just get image not found :)
-func (s *skopeoSuite) TestNoNeedAuthToPrivateRegistryV2ImageNotFound() {
-	t := s.T()
+func (s *SkopeoSuite) TestNoNeedAuthToPrivateRegistryV2ImageNotFound(c *check.C) {
 	out, err := exec.Command(skopeoBinary, "--tls-verify=false", "inspect", fmt.Sprintf("docker://%s/busybox:latest", s.regV2.url)).CombinedOutput()
-	assert.Error(t, err, "%s", string(out))
-	assert.Regexp(t, "(?s).*manifest unknown.*", string(out))                         // (?s) : '.' will also match newlines
-	assert.NotRegexp(t, "(?s).*unauthorized: authentication required.*", string(out)) // (?s) : '.' will also match newlines
+	c.Assert(err, check.NotNil, check.Commentf(string(out)))
+	wanted := ".*manifest unknown.*"
+	c.Assert(string(out), check.Matches, "(?s)"+wanted) // (?s) : '.' will also match newlines
+	wanted = ".*unauthorized: authentication required.*"
+	c.Assert(string(out), check.Not(check.Matches), "(?s)"+wanted) // (?s) : '.' will also match newlines
 }
 
-func (s *skopeoSuite) TestInspectFailsWhenReferenceIsInvalid() {
-	t := s.T()
-	assertSkopeoFails(t, `.*Invalid image name.*`, "inspect", "unknown")
+func (s *SkopeoSuite) TestInspectFailsWhenReferenceIsInvalid(c *check.C) {
+	assertSkopeoFails(c, `.*Invalid image name.*`, "inspect", "unknown")
 }
 
-func (s *skopeoSuite) TestLoginLogout() {
-	t := s.T()
-	assertSkopeoSucceeds(t, "^Login Succeeded!\n$",
-		"login", "--tls-verify=false", "--username="+s.regV2WithAuth.username, "--password="+s.regV2WithAuth.password, s.regV2WithAuth.url)
+func (s *SkopeoSuite) TestLoginLogout(c *check.C) {
+	wanted := "^Login Succeeded!\n$"
+	assertSkopeoSucceeds(c, wanted, "login", "--tls-verify=false", "--username="+s.regV2WithAuth.username, "--password="+s.regV2WithAuth.password, s.regV2WithAuth.url)
 	// test --get-login returns username
-	assertSkopeoSucceeds(t, fmt.Sprintf("^%s\n$", s.regV2WithAuth.username),
-		"login", "--tls-verify=false", "--get-login", s.regV2WithAuth.url)
+	wanted = fmt.Sprintf("^%s\n$", s.regV2WithAuth.username)
+	assertSkopeoSucceeds(c, wanted, "login", "--tls-verify=false", "--get-login", s.regV2WithAuth.url)
 	// test logout
-	assertSkopeoSucceeds(t, fmt.Sprintf("^Removed login credentials for %s\n$", s.regV2WithAuth.url),
-		"logout", s.regV2WithAuth.url)
+	wanted = fmt.Sprintf("^Removed login credentials for %s\n$", s.regV2WithAuth.url)
+	assertSkopeoSucceeds(c, wanted, "logout", s.regV2WithAuth.url)
 }
 
-func (s *skopeoSuite) TestCopyWithLocalAuth() {
-	t := s.T()
-	assertSkopeoSucceeds(t, "^Login Succeeded!\n$",
-		"login", "--tls-verify=false", "--username="+s.regV2WithAuth.username, "--password="+s.regV2WithAuth.password, s.regV2WithAuth.url)
+func (s *SkopeoSuite) TestCopyWithLocalAuth(c *check.C) {
+	wanted := "^Login Succeeded!\n$"
+	assertSkopeoSucceeds(c, wanted, "login", "--tls-verify=false", "--username="+s.regV2WithAuth.username, "--password="+s.regV2WithAuth.password, s.regV2WithAuth.url)
 	// copy to private registry using local authentication
 	imageName := fmt.Sprintf("docker://%s/busybox:mine", s.regV2WithAuth.url)
-	assertSkopeoSucceeds(t, "", "copy", "--dest-tls-verify=false", testFQIN+":latest", imageName)
+	assertSkopeoSucceeds(c, "", "copy", "--dest-tls-verify=false", testFQIN+":latest", imageName)
 	// inspect from private registry
-	assertSkopeoSucceeds(t, "", "inspect", "--tls-verify=false", imageName)
+	assertSkopeoSucceeds(c, "", "inspect", "--tls-verify=false", imageName)
 	// logout from the registry
-	assertSkopeoSucceeds(t, fmt.Sprintf("^Removed login credentials for %s\n$", s.regV2WithAuth.url),
-		"logout", s.regV2WithAuth.url)
+	wanted = fmt.Sprintf("^Removed login credentials for %s\n$", s.regV2WithAuth.url)
+	assertSkopeoSucceeds(c, wanted, "logout", s.regV2WithAuth.url)
 	// inspect from private registry should fail after logout
-	assertSkopeoFails(t, ".*authentication required.*",
-		"inspect", "--tls-verify=false", imageName)
+	wanted = ".*unauthorized: authentication required.*"
+	assertSkopeoFails(c, wanted, "inspect", "--tls-verify=false", imageName)
 }

integration/decompress-dirs.sh

@@ -0,0 +1,23 @@
+#!/bin/bash -e
+# Account for differences between dir: images that are solely due to one being
+# compressed (fresh from a registry) and the other not being compressed (read
+# from storage, which decompressed it and had to reassemble the layer blobs).
+for dir in "$@" ; do
+    # Updating the manifest's blob digests may change the formatting, so
+    # use jq to get them into similar shape.
+    jq -M . "${dir}"/manifest.json > "${dir}"/manifest.json.tmp && mv "${dir}"/manifest.json.tmp "${dir}"/manifest.json
+    for candidate in "${dir}"/???????????????????????????????????????????????????????????????? ; do
+        # If a digest-identified file looks like it was compressed,
+        # decompress it, and replace its hash and size in the manifest
+        # with the values for their decompressed versions.
+        uncompressed=`zcat "${candidate}" 2> /dev/null | sha256sum | cut -c1-64`
+        if test $? -eq 0 ; then
+            if test "$uncompressed" != e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 ; then
+                zcat "${candidate}" > "${dir}"/${uncompressed}
+                sed -r -i -e "s#sha256:$(basename ${candidate})#sha256:${uncompressed}#g" "${dir}"/manifest.json
+                sed -r -i -e "s#\"size\": $(wc -c < ${candidate}),#\"size\": $(wc -c < ${dir}/${uncompressed}),#g" "${dir}"/manifest.json
+                rm -f "${candidate}"
+            fi
+        fi
+    done
+done

integration/fixtures/registries.yaml

@@ -1,6 +1,6 @@
 docker:
    localhost:5555:
-        lookaside: file://@lookaside@
+        sigstore: file://@sigstore@
    localhost:5555/public:
-        lookaside-staging: file://@split-staging@
-        lookaside: @split-read@
+        sigstore-staging: file://@split-staging@
+        sigstore: @split-read@

integration/openshift.go

@@ -5,15 +5,15 @@ import (
 	"context"
 	"encoding/base64"
 	"fmt"
+	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
 	"strings"
-	"testing"
 	"time"
 
-	"github.com/containers/storage/pkg/homedir"
-	"github.com/stretchr/testify/require"
+	"github.com/docker/docker/pkg/homedir"
+	"gopkg.in/check.v1"
 )
 
 var adminKUBECONFIG = map[string]string{
@@ -31,21 +31,24 @@ type openshiftCluster struct {
 // startOpenshiftCluster creates a new openshiftCluster.
 // WARNING: This affects state in users' home directory! Only run
 // in isolated test environment.
-func startOpenshiftCluster(t *testing.T) *openshiftCluster {
+func startOpenshiftCluster(c *check.C) *openshiftCluster {
 	cluster := &openshiftCluster{}
-	cluster.workingDir = t.TempDir()
 
-	cluster.startMaster(t)
-	cluster.prepareRegistryConfig(t)
-	cluster.startRegistry(t)
-	cluster.ocLoginToProject(t)
-	cluster.dockerLogin(t)
-	cluster.relaxImageSignerPermissions(t)
+	dir, err := ioutil.TempDir("", "openshift-cluster")
+	c.Assert(err, check.IsNil)
+	cluster.workingDir = dir
+
+	cluster.startMaster(c)
+	cluster.prepareRegistryConfig(c)
+	cluster.startRegistry(c)
+	cluster.ocLoginToProject(c)
+	cluster.dockerLogin(c)
+	cluster.relaxImageSignerPermissions(c)
 
 	return cluster
 }
 
-// clusterCmd creates an exec.Cmd in cluster.workingDir with current environment modified by environment.
+// clusterCmd creates an exec.Cmd in cluster.workingDir with current environment modified by environment
 func (cluster *openshiftCluster) clusterCmd(env map[string]string, name string, args ...string) *exec.Cmd {
 	cmd := exec.Command(name, args...)
 	cmd.Dir = cluster.workingDir
@@ -57,20 +60,21 @@ func (cluster *openshiftCluster) clusterCmd(env map[string]string, name string,
 }
 
 // startMaster starts the OpenShift master (etcd+API server) and waits for it to be ready, or terminates on failure.
-func (cluster *openshiftCluster) startMaster(t *testing.T) {
+func (cluster *openshiftCluster) startMaster(c *check.C) {
 	cmd := cluster.clusterCmd(nil, "openshift", "start", "master")
 	cluster.processes = append(cluster.processes, cmd)
 	stdout, err := cmd.StdoutPipe()
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
+	// Send both to the same pipe. This might cause the two streams to be mixed up,
 	// but logging actually goes only to stderr - this primarily ensure we log any
 	// unexpected output to stdout.
 	cmd.Stderr = cmd.Stdout
 	err = cmd.Start()
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
-	portOpen, terminatePortCheck := newPortChecker(t, 8443)
+	portOpen, terminatePortCheck := newPortChecker(c, 8443)
 	defer func() {
-		t.Logf("Terminating port check")
+		c.Logf("Terminating port check")
 		terminatePortCheck <- true
 	}()
 
@@ -78,12 +82,12 @@ func (cluster *openshiftCluster) startMaster(t *testing.T) {
 	logCheckFound := make(chan bool)
 	go func() {
 		defer func() {
-			t.Logf("Log checker exiting")
+			c.Logf("Log checker exiting")
 		}()
 		scanner := bufio.NewScanner(stdout)
 		for scanner.Scan() {
 			line := scanner.Text()
-			t.Logf("Log line: %s", line)
+			c.Logf("Log line: %s", line)
 			if strings.Contains(line, "Started Origin Controllers") {
 				logCheckFound <- true
 				return
@@ -92,7 +96,7 @@ func (cluster *openshiftCluster) startMaster(t *testing.T) {
 			// Note: we can block before we get here.
 			select {
 			case <-terminateLogCheck:
-				t.Logf("terminated")
+				c.Logf("terminated")
 				return
 			default:
 				// Do not block here and read the next line.
@@ -101,7 +105,7 @@ func (cluster *openshiftCluster) startMaster(t *testing.T) {
 		logCheckFound <- false
 	}()
 	defer func() {
-		t.Logf("Terminating log check")
+		c.Logf("Terminating log check")
 		terminateLogCheck <- true
 	}()
 
@@ -110,26 +114,26 @@ func (cluster *openshiftCluster) startMaster(t *testing.T) {
 	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Minute)
 	defer cancel()
 	for !gotPortCheck || !gotLogCheck {
-		t.Logf("Waiting for master")
+		c.Logf("Waiting for master")
 		select {
 		case <-portOpen:
-			t.Logf("port check done")
+			c.Logf("port check done")
 			gotPortCheck = true
 		case found := <-logCheckFound:
-			t.Logf("log check done, found: %t", found)
+			c.Logf("log check done, found: %t", found)
 			if !found {
-				t.Fatal("log check done, success message not found")
+				c.Fatal("log check done, success message not found")
 			}
 			gotLogCheck = true
 		case <-ctx.Done():
-			t.Fatalf("Timed out waiting for master: %v", ctx.Err())
+			c.Fatalf("Timed out waiting for master: %v", ctx.Err())
 		}
 	}
-	t.Logf("OK, master started!")
+	c.Logf("OK, master started!")
 }
 
 // prepareRegistryConfig creates a registry service account and a related k8s client configuration in ${cluster.workingDir}/openshift.local.registry.
-func (cluster *openshiftCluster) prepareRegistryConfig(t *testing.T) {
+func (cluster *openshiftCluster) prepareRegistryConfig(c *check.C) {
 	// This partially mimics the objects created by (oadm registry), except that we run the
 	// server directly as an ordinary process instead of a pod with an implicitly attached service account.
 	saJSON := `{
@@ -140,93 +144,93 @@ func (cluster *openshiftCluster) prepareRegistryConfig(t *testing.T) {
 		}
 	}`
 	cmd := cluster.clusterCmd(adminKUBECONFIG, "oc", "create", "-f", "-")
-	runExecCmdWithInput(t, cmd, saJSON)
+	runExecCmdWithInput(c, cmd, saJSON)
 
 	cmd = cluster.clusterCmd(adminKUBECONFIG, "oadm", "policy", "add-cluster-role-to-user", "system:registry", "-z", "registry")
 	out, err := cmd.CombinedOutput()
-	require.NoError(t, err, "%s", string(out))
-	require.Equal(t, "cluster role \"system:registry\" added: \"registry\"\n", string(out))
+	c.Assert(err, check.IsNil, check.Commentf("%s", string(out)))
+	c.Assert(string(out), check.Equals, "cluster role \"system:registry\" added: \"registry\"\n")
 
 	cmd = cluster.clusterCmd(adminKUBECONFIG, "oadm", "create-api-client-config", "--client-dir=openshift.local.registry", "--basename=openshift-registry", "--user=system:serviceaccount:default:registry")
 	out, err = cmd.CombinedOutput()
-	require.NoError(t, err, "%s", string(out))
-	require.Equal(t, "", string(out))
+	c.Assert(err, check.IsNil, check.Commentf("%s", string(out)))
+	c.Assert(string(out), check.Equals, "")
 }
 
 // startRegistry starts the OpenShift registry with configPart on port, waits for it to be ready, and returns the process object, or terminates on failure.
-func (cluster *openshiftCluster) startRegistryProcess(t *testing.T, port uint16, configPath string) *exec.Cmd {
+func (cluster *openshiftCluster) startRegistryProcess(c *check.C, port int, configPath string) *exec.Cmd {
 	cmd := cluster.clusterCmd(map[string]string{
 		"KUBECONFIG":          "openshift.local.registry/openshift-registry.kubeconfig",
 		"DOCKER_REGISTRY_URL": fmt.Sprintf("127.0.0.1:%d", port),
 	}, "dockerregistry", configPath)
-	consumeAndLogOutputs(t, fmt.Sprintf("registry-%d", port), cmd)
+	consumeAndLogOutputs(c, fmt.Sprintf("registry-%d", port), cmd)
 	err := cmd.Start()
-	require.NoError(t, err, "%s")
+	c.Assert(err, check.IsNil)
 
-	portOpen, terminatePortCheck := newPortChecker(t, port)
+	portOpen, terminatePortCheck := newPortChecker(c, port)
 	defer func() {
 		terminatePortCheck <- true
 	}()
-	t.Logf("Waiting for registry to start")
+	c.Logf("Waiting for registry to start")
 	ctx, cancel := context.WithTimeout(context.Background(), 1*time.Minute)
 	defer cancel()
 	select {
 	case <-portOpen:
-		t.Logf("OK, Registry port open")
+		c.Logf("OK, Registry port open")
 	case <-ctx.Done():
-		t.Fatalf("Timed out waiting for registry to start: %v", ctx.Err())
+		c.Fatalf("Timed out waiting for registry to start: %v", ctx.Err())
 	}
 
 	return cmd
 }
 
 // startRegistry starts the OpenShift registry and waits for it to be ready, or terminates on failure.
-func (cluster *openshiftCluster) startRegistry(t *testing.T) {
+func (cluster *openshiftCluster) startRegistry(c *check.C) {
 	// Our “primary” registry
-	cluster.processes = append(cluster.processes, cluster.startRegistryProcess(t, 5000, "/atomic-registry-config.yml"))
+	cluster.processes = append(cluster.processes, cluster.startRegistryProcess(c, 5000, "/atomic-registry-config.yml"))
 
 	// A registry configured with acceptschema2:false
-	schema1Config := fileFromFixture(t, "/atomic-registry-config.yml", map[string]string{
+	schema1Config := fileFromFixture(c, "/atomic-registry-config.yml", map[string]string{
 		"addr: :5000":              "addr: :5005",
 		"rootdirectory: /registry": "rootdirectory: /registry-schema1",
 		// The default configuration currently already contains acceptschema2: false
 	})
 	// Make sure the configuration contains "acceptschema2: false", because eventually it will be enabled upstream and this function will need to be updated.
-	configContents, err := os.ReadFile(schema1Config)
-	require.NoError(t, err)
-	require.Regexp(t, "(?s).*acceptschema2: false.*", string(configContents))
-	cluster.processes = append(cluster.processes, cluster.startRegistryProcess(t, 5005, schema1Config))
+	configContents, err := ioutil.ReadFile(schema1Config)
+	c.Assert(err, check.IsNil)
+	c.Assert(string(configContents), check.Matches, "(?s).*acceptschema2: false.*")
+	cluster.processes = append(cluster.processes, cluster.startRegistryProcess(c, 5005, schema1Config))
 
 	// A registry configured with acceptschema2:true
-	schema2Config := fileFromFixture(t, "/atomic-registry-config.yml", map[string]string{
+	schema2Config := fileFromFixture(c, "/atomic-registry-config.yml", map[string]string{
 		"addr: :5000":              "addr: :5006",
 		"rootdirectory: /registry": "rootdirectory: /registry-schema2",
 		"acceptschema2: false":     "acceptschema2: true",
 	})
-	cluster.processes = append(cluster.processes, cluster.startRegistryProcess(t, 5006, schema2Config))
+	cluster.processes = append(cluster.processes, cluster.startRegistryProcess(c, 5006, schema2Config))
 }
 
 // ocLogin runs (oc login) and (oc new-project) on the cluster, or terminates on failure.
-func (cluster *openshiftCluster) ocLoginToProject(t *testing.T) {
-	t.Logf("oc login")
+func (cluster *openshiftCluster) ocLoginToProject(c *check.C) {
+	c.Logf("oc login")
 	cmd := cluster.clusterCmd(nil, "oc", "login", "--certificate-authority=openshift.local.config/master/ca.crt", "-u", "myuser", "-p", "mypw", "https://localhost:8443")
 	out, err := cmd.CombinedOutput()
-	require.NoError(t, err, "%s", out)
-	require.Regexp(t, "(?s).*Login successful.*", string(out)) // (?s) : '.' will also match newlines
+	c.Assert(err, check.IsNil, check.Commentf("%s", out))
+	c.Assert(string(out), check.Matches, "(?s).*Login successful.*") // (?s) : '.' will also match newlines
 
-	outString := combinedOutputOfCommand(t, "oc", "new-project", "myns")
-	require.Regexp(t, `(?s).*Now using project "myns".*`, outString) // (?s) : '.' will also match newlines
+	outString := combinedOutputOfCommand(c, "oc", "new-project", "myns")
+	c.Assert(outString, check.Matches, `(?s).*Now using project "myns".*`) // (?s) : '.' will also match newlines
 }
 
 // dockerLogin simulates (docker login) to the cluster, or terminates on failure.
 // We do not run (docker login) directly, because that requires a running daemon and a docker package.
-func (cluster *openshiftCluster) dockerLogin(t *testing.T) {
+func (cluster *openshiftCluster) dockerLogin(c *check.C) {
 	cluster.dockerDir = filepath.Join(homedir.Get(), ".docker")
 	err := os.Mkdir(cluster.dockerDir, 0700)
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
-	out := combinedOutputOfCommand(t, "oc", "config", "view", "-o", "json", "-o", "jsonpath={.users[*].user.token}")
-	t.Logf("oc config value: %s", out)
+	out := combinedOutputOfCommand(c, "oc", "config", "view", "-o", "json", "-o", "jsonpath={.users[*].user.token}")
+	c.Logf("oc config value: %s", out)
 	authValue := base64.StdEncoding.EncodeToString([]byte("unused:" + out))
 	auths := []string{}
 	for _, port := range []int{5000, 5005, 5006} {
@@ -236,30 +240,30 @@ func (cluster *openshiftCluster) dockerLogin(t *testing.T) {
 			}`, port, authValue))
 	}
 	configJSON := `{"auths": {` + strings.Join(auths, ",") + `}}`
-	err = os.WriteFile(filepath.Join(cluster.dockerDir, "config.json"), []byte(configJSON), 0600)
-	require.NoError(t, err)
+	err = ioutil.WriteFile(filepath.Join(cluster.dockerDir, "config.json"), []byte(configJSON), 0600)
+	c.Assert(err, check.IsNil)
 }
 
 // relaxImageSignerPermissions opens up the system:image-signer permissions so that
 // anyone can work with signatures
 // FIXME: This also allows anyone to DoS anyone else; this design is really not all
 // that workable, but it is the best we can do for now.
-func (cluster *openshiftCluster) relaxImageSignerPermissions(t *testing.T) {
+func (cluster *openshiftCluster) relaxImageSignerPermissions(c *check.C) {
 	cmd := cluster.clusterCmd(adminKUBECONFIG, "oadm", "policy", "add-cluster-role-to-group", "system:image-signer", "system:authenticated")
 	out, err := cmd.CombinedOutput()
-	require.NoError(t, err, "%s", string(out))
-	require.Equal(t, "cluster role \"system:image-signer\" added: \"system:authenticated\"\n", string(out))
+	c.Assert(err, check.IsNil, check.Commentf("%s", string(out)))
+	c.Assert(string(out), check.Equals, "cluster role \"system:image-signer\" added: \"system:authenticated\"\n")
 }
 
 // tearDown stops the cluster services and deletes (only some!) of the state.
-func (cluster *openshiftCluster) tearDown(t *testing.T) {
+func (cluster *openshiftCluster) tearDown(c *check.C) {
 	for i := len(cluster.processes) - 1; i >= 0; i-- {
-		// It’s undocumented what Kill() returns if the process has terminated,
-		// so we couldn’t check just for that. This is running in a container anyway…
-		_ = cluster.processes[i].Process.Kill()
+		cluster.processes[i].Process.Kill()
+	}
+	if cluster.workingDir != "" {
+		os.RemoveAll(cluster.workingDir)
 	}
 	if cluster.dockerDir != "" {
-		err := os.RemoveAll(cluster.dockerDir)
-		require.NoError(t, err)
+		os.RemoveAll(cluster.dockerDir)
 	}
 }

integration/openshift_shell_test.go

@@ -7,8 +7,7 @@ import (
 	"os"
 	"os/exec"
 
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
+	"gopkg.in/check.v1"
 )
 
 /*
@@ -16,15 +15,11 @@ TestRunShell is not really a test; it is a convenient way to use the registry se
 in openshift.go and CopySuite to get an interactive environment for experimentation.
 
 To use it, run:
-
 	sudo make shell
-
 to start a container, then within the container:
-
-	SKOPEO_CONTAINER_TESTS=1 PS1='nested> ' go test -tags openshift_shell -timeout=24h ./integration -v -run='copySuite.TestRunShell'
+	SKOPEO_CONTAINER_TESTS=1 PS1='nested> ' go test -tags openshift_shell -timeout=24h ./integration -v -check.v -check.vv -check.f='CopySuite.TestRunShell'
 
 An example of what can be done within the container:
-
 	cd ..; make bin/skopeo PREFIX=/usr install
 	./skopeo --tls-verify=false  copy --sign-by=personal@example.com docker://quay.io/libpod/busybox:latest atomic:localhost:5000/myns/personal:personal
 	oc get istag personal:personal -o json
@@ -34,14 +29,13 @@ An example of what can be done within the container:
 	curl -L -v 'http://localhost:5000/v2/myns/personal/manifests/personal' --header 'Authorization: Bearer $token_from_oauth'
 	curl -L -v 'http://localhost:5000/extensions/v2/myns/personal/signatures/$manifest_digest' --header 'Authorization: Bearer $token_from_oauth'
 */
-func (s *copySuite) TestRunShell() {
-	t := s.T()
+func (s *CopySuite) TestRunShell(c *check.C) {
 	cmd := exec.Command("bash", "-i")
 	tty, err := os.OpenFile("/dev/tty", os.O_RDWR, 0)
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 	cmd.Stdin = tty
 	cmd.Stdout = tty
 	cmd.Stderr = tty
 	err = cmd.Run()
-	assert.NoError(t, err)
+	c.Assert(err, check.IsNil)
 }

integration/procutils.go

@@ -7,6 +7,6 @@ import (
 	"os/exec"
 )
 
-// cmdLifecycleToParentIfPossible tries to exit if the parent process exits (only works on Linux).
+// cmdLifecycleToParentIfPossible tries to exit if the parent process exits (only works on Linux)
 func cmdLifecycleToParentIfPossible(c *exec.Cmd) {
 }

integration/procutils_linux.go

@@ -5,7 +5,7 @@ import (
 	"syscall"
 )
 
-// cmdLifecycleToParentIfPossible is a thin wrapper around prctl(PR_SET_PDEATHSIG)
+// cmdLifecyleToParentIfPossible is a thin wrapper around prctl(PR_SET_PDEATHSIG)
 // on Linux.
 func cmdLifecycleToParentIfPossible(c *exec.Cmd) {
 	c.SysProcAttr = &syscall.SysProcAttr{

integration/proxy_test.go

@@ -3,27 +3,22 @@ package main
 import (
 	"encoding/json"
 	"fmt"
-	"io"
+	"io/ioutil"
 	"net"
 	"os"
 	"os/exec"
 	"strings"
 	"syscall"
-	"testing"
 	"time"
 
+	"gopkg.in/check.v1"
+
 	"github.com/containers/image/v5/manifest"
 	imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-	"github.com/stretchr/testify/suite"
 )
 
 // This image is known to be x86_64 only right now
-const knownNotManifestListedImageX8664 = "docker://quay.io/coreos/11bot"
-
-// knownNotExtantImage would be very surprising if it did exist
-const knownNotExtantImage = "docker://quay.io/centos/centos:opensusewindowsubuntu"
+const knownNotManifestListedImage_x8664 = "docker://quay.io/coreos/11bot"
 
 const expectedProxySemverMajor = "0.2"
 
@@ -34,7 +29,7 @@ type request struct {
 	// Method is the name of the function
 	Method string `json:"method"`
 	// Args is the arguments (parsed inside the function)
-	Args []any `json:"args"`
+	Args []interface{} `json:"args"`
 }
 
 // reply is copied from proxy.go
@@ -42,7 +37,7 @@ type reply struct {
 	// Success is true if and only if the call succeeded.
 	Success bool `json:"success"`
 	// Value is an arbitrary value (or values, as array/map) returned from the call.
-	Value any `json:"value"`
+	Value interface{} `json:"value"`
 	// PipeID is an index into open pipes, and should be passed to FinishPipe
 	PipeID uint32 `json:"pipeid"`
 	// Error should be non-empty if Success == false
@@ -62,7 +57,7 @@ type pipefd struct {
 	fd *os.File
 }
 
-func (p *proxy) call(method string, args []any) (rval any, fd *pipefd, err error) {
+func (self *proxy) call(method string, args []interface{}) (rval interface{}, fd *pipefd, err error) {
 	req := request{
 		Method: method,
 		Args:   args,
@@ -71,7 +66,7 @@ func (p *proxy) call(method string, args []any) (rval any, fd *pipefd, err error
 	if err != nil {
 		return
 	}
-	n, err := p.c.Write(reqbuf)
+	n, err := self.c.Write(reqbuf)
 	if err != nil {
 		return
 	}
@@ -81,9 +76,9 @@ func (p *proxy) call(method string, args []any) (rval any, fd *pipefd, err error
 	}
 	oob := make([]byte, syscall.CmsgSpace(1))
 	replybuf := make([]byte, maxMsgSize)
-	n, oobn, _, _, err := p.c.ReadMsgUnix(replybuf, oob)
+	n, oobn, _, _, err := self.c.ReadMsgUnix(replybuf, oob)
 	if err != nil {
-		err = fmt.Errorf("reading reply: %w", err)
+		err = fmt.Errorf("reading reply: %v", err)
 		return
 	}
 	var reply reply
@@ -101,7 +96,7 @@ func (p *proxy) call(method string, args []any) (rval any, fd *pipefd, err error
 		var scms []syscall.SocketControlMessage
 		scms, err = syscall.ParseSocketControlMessage(oob[:oobn])
 		if err != nil {
-			err = fmt.Errorf("failed to parse control message: %w", err)
+			err = fmt.Errorf("failed to parse control message: %v", err)
 			return
 		}
 		if len(scms) != 1 {
@@ -111,7 +106,7 @@ func (p *proxy) call(method string, args []any) (rval any, fd *pipefd, err error
 		var fds []int
 		fds, err = syscall.ParseUnixRights(&scms[0])
 		if err != nil {
-			err = fmt.Errorf("failed to parse unix rights: %w", err)
+			err = fmt.Errorf("failed to parse unix rights: %v", err)
 			return
 		}
 		fd = &pipefd{
@@ -124,9 +119,9 @@ func (p *proxy) call(method string, args []any) (rval any, fd *pipefd, err error
 	return
 }
 
-func (p *proxy) callNoFd(method string, args []any) (rval any, err error) {
+func (self *proxy) callNoFd(method string, args []interface{}) (rval interface{}, err error) {
 	var fd *pipefd
-	rval, fd, err = p.call(method, args)
+	rval, fd, err = self.call(method, args)
 	if err != nil {
 		return
 	}
@@ -137,9 +132,9 @@ func (p *proxy) callNoFd(method string, args []any) (rval any, err error) {
 	return rval, nil
 }
 
-func (p *proxy) callReadAllBytes(method string, args []any) (rval any, buf []byte, err error) {
+func (self *proxy) callReadAllBytes(method string, args []interface{}) (rval interface{}, buf []byte, err error) {
 	var fd *pipefd
-	rval, fd, err = p.call(method, args)
+	rval, fd, err = self.call(method, args)
 	if err != nil {
 		return
 	}
@@ -149,13 +144,13 @@ func (p *proxy) callReadAllBytes(method string, args []any) (rval any, buf []byt
 	}
 	fetchchan := make(chan byteFetch)
 	go func() {
-		manifestBytes, err := io.ReadAll(fd.fd)
+		manifestBytes, err := ioutil.ReadAll(fd.fd)
 		fetchchan <- byteFetch{
 			content: manifestBytes,
 			err:     err,
 		}
 	}()
-	_, err = p.callNoFd("FinishPipe", []any{fd.id})
+	_, err = self.callNoFd("FinishPipe", []interface{}{fd.id})
 	if err != nil {
 		return
 	}
@@ -216,12 +211,17 @@ func newProxy() (*proxy, error) {
 	return p, nil
 }
 
-func TestProxy(t *testing.T) {
-	suite.Run(t, &proxySuite{})
+func init() {
+	check.Suite(&ProxySuite{})
 }
 
-type proxySuite struct {
-	suite.Suite
+type ProxySuite struct {
+}
+
+func (s *ProxySuite) SetUpSuite(c *check.C) {
+}
+
+func (s *ProxySuite) TearDownSuite(c *check.C) {
 }
 
 type byteFetch struct {
@@ -230,7 +230,7 @@ type byteFetch struct {
 }
 
 func runTestGetManifestAndConfig(p *proxy, img string) error {
-	v, err := p.callNoFd("OpenImage", []any{img})
+	v, err := p.callNoFd("OpenImage", []interface{}{knownNotManifestListedImage_x8664})
 	if err != nil {
 		return err
 	}
@@ -239,32 +239,9 @@ func runTestGetManifestAndConfig(p *proxy, img string) error {
 	if !ok {
 		return fmt.Errorf("OpenImage return value is %T", v)
 	}
-	imgid := uint64(imgidv)
-	if imgid == 0 {
-		return fmt.Errorf("got zero from expected image")
-	}
+	imgid := uint32(imgidv)
 
-	// Also verify the optional path
-	v, err = p.callNoFd("OpenImageOptional", []any{img})
-	if err != nil {
-		return err
-	}
-
-	imgidv, ok = v.(float64)
-	if !ok {
-		return fmt.Errorf("OpenImageOptional return value is %T", v)
-	}
-	imgid2 := uint64(imgidv)
-	if imgid2 == 0 {
-		return fmt.Errorf("got zero from expected image")
-	}
-
-	_, err = p.callNoFd("CloseImage", []any{imgid2})
-	if err != nil {
-		return err
-	}
-
-	_, manifestBytes, err := p.callReadAllBytes("GetManifest", []any{imgid})
+	v, manifestBytes, err := p.callReadAllBytes("GetManifest", []interface{}{imgid})
 	if err != nil {
 		return err
 	}
@@ -273,7 +250,7 @@ func runTestGetManifestAndConfig(p *proxy, img string) error {
 		return err
 	}
 
-	_, configBytes, err := p.callReadAllBytes("GetFullConfig", []any{imgid})
+	v, configBytes, err := p.callReadAllBytes("GetFullConfig", []interface{}{imgid})
 	if err != nil {
 		return err
 	}
@@ -292,7 +269,7 @@ func runTestGetManifestAndConfig(p *proxy, img string) error {
 	}
 
 	// Also test this legacy interface
-	_, ctrconfigBytes, err := p.callReadAllBytes("GetConfig", []any{imgid})
+	v, ctrconfigBytes, err := p.callReadAllBytes("GetConfig", []interface{}{imgid})
 	if err != nil {
 		return err
 	}
@@ -307,51 +284,24 @@ func runTestGetManifestAndConfig(p *proxy, img string) error {
 		return fmt.Errorf("No CMD or ENTRYPOINT set")
 	}
 
-	_, err = p.callNoFd("CloseImage", []any{imgid})
-	if err != nil {
-		return err
-	}
+	_, err = p.callNoFd("CloseImage", []interface{}{imgid})
 
 	return nil
 }
 
-func runTestOpenImageOptionalNotFound(p *proxy, img string) error {
-	v, err := p.callNoFd("OpenImageOptional", []any{img})
-	if err != nil {
-		return err
-	}
-
-	imgidv, ok := v.(float64)
-	if !ok {
-		return fmt.Errorf("OpenImageOptional return value is %T", v)
-	}
-	imgid := uint64(imgidv)
-	if imgid != 0 {
-		return fmt.Errorf("Unexpected optional image id %v", imgid)
-	}
-	return nil
-}
-
-func (s *proxySuite) TestProxy() {
-	t := s.T()
+func (s *ProxySuite) TestProxy(c *check.C) {
 	p, err := newProxy()
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
-	err = runTestGetManifestAndConfig(p, knownNotManifestListedImageX8664)
+	err = runTestGetManifestAndConfig(p, knownNotManifestListedImage_x8664)
 	if err != nil {
-		err = fmt.Errorf("Testing image %s: %v", knownNotManifestListedImageX8664, err)
+		err = fmt.Errorf("Testing image %s: %v", knownNotManifestListedImage_x8664, err)
 	}
-	assert.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
 	err = runTestGetManifestAndConfig(p, knownListImage)
 	if err != nil {
 		err = fmt.Errorf("Testing image %s: %v", knownListImage, err)
 	}
-	assert.NoError(t, err)
-
-	err = runTestOpenImageOptionalNotFound(p, knownNotExtantImage)
-	if err != nil {
-		err = fmt.Errorf("Testing optional image %s: %v", knownNotExtantImage, err)
-	}
-	assert.NoError(t, err)
+	c.Assert(err, check.IsNil)
 }

integration/registry.go

@@ -2,14 +2,14 @@ package main
 
 import (
 	"fmt"
+	"io/ioutil"
 	"net/http"
 	"os"
 	"os/exec"
 	"path/filepath"
-	"testing"
 	"time"
 
-	"github.com/stretchr/testify/require"
+	"gopkg.in/check.v1"
 )
 
 const (
@@ -20,17 +20,18 @@ const (
 type testRegistryV2 struct {
 	cmd      *exec.Cmd
 	url      string
+	dir      string
 	username string
 	password string
 	email    string
 }
 
-func setupRegistryV2At(t *testing.T, url string, auth, schema1 bool) *testRegistryV2 {
-	reg, err := newTestRegistryV2At(t, url, auth, schema1)
-	require.NoError(t, err)
+func setupRegistryV2At(c *check.C, url string, auth, schema1 bool) *testRegistryV2 {
+	reg, err := newTestRegistryV2At(c, url, auth, schema1)
+	c.Assert(err, check.IsNil)
 
 	// Wait for registry to be ready to serve requests.
-	for range 50 {
+	for i := 0; i != 50; i++ {
 		if err = reg.Ping(); err == nil {
 			break
 		}
@@ -38,13 +39,16 @@ func setupRegistryV2At(t *testing.T, url string, auth, schema1 bool) *testRegist
 	}
 
 	if err != nil {
-		t.Fatal("Timeout waiting for test registry to become available")
+		c.Fatal("Timeout waiting for test registry to become available")
 	}
 	return reg
 }
 
-func newTestRegistryV2At(t *testing.T, url string, auth, schema1 bool) (*testRegistryV2, error) {
-	tmp := t.TempDir()
+func newTestRegistryV2At(c *check.C, url string, auth, schema1 bool) (*testRegistryV2, error) {
+	tmp, err := ioutil.TempDir("", "registry-test-")
+	if err != nil {
+		return nil, err
+	}
 	template := `version: 0.1
 loglevel: debug
 storage:
@@ -54,9 +58,6 @@ storage:
         enabled: true
 http:
     addr: %s
-compatibility:
-    schema1:
-        enabled: true
 %s`
 	var (
 		htpasswd string
@@ -70,7 +71,7 @@ compatibility:
 		username = "testuser"
 		password = "testpassword"
 		email = "test@test.org"
-		if err := os.WriteFile(htpasswdPath, []byte(userpasswd), os.FileMode(0644)); err != nil {
+		if err := ioutil.WriteFile(htpasswdPath, []byte(userpasswd), os.FileMode(0644)); err != nil {
 			return nil, err
 		}
 		htpasswd = fmt.Sprintf(`auth:
@@ -85,47 +86,47 @@ compatibility:
 		return nil, err
 	}
 	if _, err := fmt.Fprintf(config, template, tmp, url, htpasswd); err != nil {
+		os.RemoveAll(tmp)
 		return nil, err
 	}
 
-	var cmd *exec.Cmd
+	binary := binaryV2
 	if schema1 {
-		cmd = exec.Command(binaryV2Schema1, confPath)
-	} else {
-		cmd = exec.Command(binaryV2, "serve", confPath)
+		binary = binaryV2Schema1
 	}
 
-	consumeAndLogOutputs(t, fmt.Sprintf("registry-%s", url), cmd)
+	cmd := exec.Command(binary, confPath)
+	consumeAndLogOutputs(c, fmt.Sprintf("registry-%s", url), cmd)
 	if err := cmd.Start(); err != nil {
+		os.RemoveAll(tmp)
 		if os.IsNotExist(err) {
-			t.Skip(err.Error())
+			c.Skip(err.Error())
 		}
 		return nil, err
 	}
 	return &testRegistryV2{
 		cmd:      cmd,
 		url:      url,
+		dir:      tmp,
 		username: username,
 		password: password,
 		email:    email,
 	}, nil
 }
 
-func (r *testRegistryV2) Ping() error {
+func (t *testRegistryV2) Ping() error {
 	// We always ping through HTTP for our test registry.
-	resp, err := http.Get(fmt.Sprintf("http://%s/v2/", r.url))
+	resp, err := http.Get(fmt.Sprintf("http://%s/v2/", t.url))
 	if err != nil {
 		return err
 	}
-	defer resp.Body.Close()
 	if resp.StatusCode != http.StatusOK && resp.StatusCode != http.StatusUnauthorized {
 		return fmt.Errorf("registry ping replied with an unexpected status code %d", resp.StatusCode)
 	}
 	return nil
 }
 
-func (r *testRegistryV2) tearDown() {
-	// It’s undocumented what Kill() returns if the process has terminated,
-	// so we couldn’t check just for that. This is running in a container anyway…
-	_ = r.cmd.Process.Kill()
+func (t *testRegistryV2) Close() {
+	t.cmd.Process.Kill()
+	os.RemoveAll(t.dir)
 }

integration/signing_test.go

@@ -3,31 +3,28 @@ package main
 import (
 	"errors"
 	"fmt"
+	"io/ioutil"
 	"os"
 	"os/exec"
 	"strings"
-	"testing"
 
 	"github.com/containers/image/v5/signature"
-	"github.com/stretchr/testify/require"
-	"github.com/stretchr/testify/suite"
+	"gopkg.in/check.v1"
 )
 
 const (
 	gpgBinary = "gpg"
 )
 
-func TestSigning(t *testing.T) {
-	suite.Run(t, &signingSuite{})
+func init() {
+	check.Suite(&SigningSuite{})
 }
 
-type signingSuite struct {
-	suite.Suite
+type SigningSuite struct {
+	gpgHome     string
 	fingerprint string
 }
 
-var _ = suite.SetupAllSuite(&signingSuite{})
-
 func findFingerprint(lineBytes []byte) (string, error) {
 	lines := string(lineBytes)
 	for _, line := range strings.Split(lines, "\n") {
@@ -39,41 +36,50 @@ func findFingerprint(lineBytes []byte) (string, error) {
 	return "", errors.New("No fingerprint found")
 }
 
-func (s *signingSuite) SetupSuite() {
-	t := s.T()
+func (s *SigningSuite) SetUpSuite(c *check.C) {
 	_, err := exec.LookPath(skopeoBinary)
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
-	gpgHome := t.TempDir()
-	t.Setenv("GNUPGHOME", gpgHome)
+	s.gpgHome, err = ioutil.TempDir("", "skopeo-gpg")
+	c.Assert(err, check.IsNil)
+	os.Setenv("GNUPGHOME", s.gpgHome)
 
-	runCommandWithInput(t, "Key-Type: RSA\nName-Real: Testing user\n%no-protection\n%commit\n", gpgBinary, "--homedir", gpgHome, "--batch", "--gen-key")
+	runCommandWithInput(c, "Key-Type: RSA\nName-Real: Testing user\n%no-protection\n%commit\n", gpgBinary, "--homedir", s.gpgHome, "--batch", "--gen-key")
 
-	lines, err := exec.Command(gpgBinary, "--homedir", gpgHome, "--with-colons", "--no-permission-warning", "--fingerprint").Output()
-	require.NoError(t, err)
+	lines, err := exec.Command(gpgBinary, "--homedir", s.gpgHome, "--with-colons", "--no-permission-warning", "--fingerprint").Output()
+	c.Assert(err, check.IsNil)
 	s.fingerprint, err = findFingerprint(lines)
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 }
 
-func (s *signingSuite) TestSignVerifySmoke() {
-	t := s.T()
+func (s *SigningSuite) TearDownSuite(c *check.C) {
+	if s.gpgHome != "" {
+		err := os.RemoveAll(s.gpgHome)
+		c.Assert(err, check.IsNil)
+	}
+	s.gpgHome = ""
+
+	os.Unsetenv("GNUPGHOME")
+}
+
+func (s *SigningSuite) TestSignVerifySmoke(c *check.C) {
 	mech, _, err := signature.NewEphemeralGPGSigningMechanism([]byte{})
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 	defer mech.Close()
 	if err := mech.SupportsSigning(); err != nil { // FIXME? Test that verification and policy enforcement works, using signatures from fixtures
-		t.Skipf("Signing not supported: %v", err)
+		c.Skip(fmt.Sprintf("Signing not supported: %v", err))
 	}
 
 	manifestPath := "fixtures/image.manifest.json"
 	dockerReference := "testing/smoketest"
 
-	sigOutput, err := os.CreateTemp("", "sig")
-	require.NoError(t, err)
+	sigOutput, err := ioutil.TempFile("", "sig")
+	c.Assert(err, check.IsNil)
 	defer os.Remove(sigOutput.Name())
-	assertSkopeoSucceeds(t, "^$", "standalone-sign", "-o", sigOutput.Name(),
+	assertSkopeoSucceeds(c, "^$", "standalone-sign", "-o", sigOutput.Name(),
 		manifestPath, dockerReference, s.fingerprint)
 
-	expected := fmt.Sprintf("^Signature verified using fingerprint %s, digest %s\n$", s.fingerprint, TestImageManifestDigest)
-	assertSkopeoSucceeds(t, expected, "standalone-verify", manifestPath,
+	expected := fmt.Sprintf("^Signature verified, digest %s\n$", TestImageManifestDigest)
+	assertSkopeoSucceeds(c, expected, "standalone-verify", manifestPath,
 		dockerReference, s.fingerprint, sigOutput.Name())
 }

integration/sync_test.go

@@ -3,29 +3,26 @@ package main
 import (
 	"context"
 	"fmt"
-	"io/fs"
+	"io/ioutil"
 	"os"
 	"path"
 	"path/filepath"
 	"regexp"
 	"strings"
-	"testing"
 
 	"github.com/containers/image/v5/docker"
 	"github.com/containers/image/v5/docker/reference"
 	"github.com/containers/image/v5/manifest"
 	"github.com/containers/image/v5/types"
 	imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-	"github.com/stretchr/testify/suite"
+	"gopkg.in/check.v1"
 )
 
 const (
 	// A repository with a path with multiple components in it which
 	// contains multiple tags, preferably with some tags pointing to
 	// manifest lists, and with some tags that don't.
-	pullableRepo = "registry.k8s.io/coredns/coredns"
+	pullableRepo = "quay.io/libpod/testimage"
 	// A tagged image in the repository that we can inspect and copy.
 	pullableTaggedImage = "registry.k8s.io/coredns/coredns:v1.6.6"
 	// A tagged manifest list in the repository that we can inspect and copy.
@@ -36,36 +33,31 @@ const (
 	pullableRepoWithLatestTag = "registry.k8s.io/pause"
 )
 
-func TestSync(t *testing.T) {
-	suite.Run(t, &syncSuite{})
+func init() {
+	check.Suite(&SyncSuite{})
 }
 
-type syncSuite struct {
-	suite.Suite
+type SyncSuite struct {
 	cluster  *openshiftCluster
 	registry *testRegistryV2
+	gpgHome  string
 }
 
-var _ = suite.SetupAllSuite(&syncSuite{})
-var _ = suite.TearDownAllSuite(&syncSuite{})
-
-func (s *syncSuite) SetupSuite() {
-	t := s.T()
-
+func (s *SyncSuite) SetUpSuite(c *check.C) {
 	const registryAuth = false
 	const registrySchema1 = false
 
 	if os.Getenv("SKOPEO_LOCAL_TESTS") == "1" {
-		t.Log("Running tests without a container")
+		c.Log("Running tests without a container")
 		fmt.Printf("NOTE: tests requires a V2 registry at url=%s, with auth=%t, schema1=%t \n", v2DockerRegistryURL, registryAuth, registrySchema1)
 		return
 	}
 
 	if os.Getenv("SKOPEO_CONTAINER_TESTS") != "1" {
-		t.Skip("Not running in a container, refusing to affect user state")
+		c.Skip("Not running in a container, refusing to affect user state")
 	}
 
-	s.cluster = startOpenshiftCluster(t) // FIXME: Set up TLS for the docker registry port instead of using "--tls-verify=false" all over the place.
+	s.cluster = startOpenshiftCluster(c) // FIXME: Set up TLS for the docker registry port instead of using "--tls-verify=false" all over the place.
 
 	for _, stream := range []string{"unsigned", "personal", "official", "naming", "cosigned", "compression", "schema1", "schema2"} {
 		isJSON := fmt.Sprintf(`{
@@ -76,210 +68,207 @@ func (s *syncSuite) SetupSuite() {
 			},
 			"spec": {}
 		}`, stream)
-		runCommandWithInput(t, isJSON, "oc", "create", "-f", "-")
+		runCommandWithInput(c, isJSON, "oc", "create", "-f", "-")
 	}
 
 	// FIXME: Set up TLS for the docker registry port instead of using "--tls-verify=false" all over the place.
-	s.registry = setupRegistryV2At(t, v2DockerRegistryURL, registryAuth, registrySchema1)
+	s.registry = setupRegistryV2At(c, v2DockerRegistryURL, registryAuth, registrySchema1)
 
-	gpgHome := t.TempDir()
-	t.Setenv("GNUPGHOME", gpgHome)
+	gpgHome, err := ioutil.TempDir("", "skopeo-gpg")
+	c.Assert(err, check.IsNil)
+	s.gpgHome = gpgHome
+	os.Setenv("GNUPGHOME", s.gpgHome)
 
 	for _, key := range []string{"personal", "official"} {
 		batchInput := fmt.Sprintf("Key-Type: RSA\nName-Real: Test key - %s\nName-email: %s@example.com\n%%no-protection\n%%commit\n",
 			key, key)
-		runCommandWithInput(t, batchInput, gpgBinary, "--batch", "--gen-key")
+		runCommandWithInput(c, batchInput, gpgBinary, "--batch", "--gen-key")
 
-		out := combinedOutputOfCommand(t, gpgBinary, "--armor", "--export", fmt.Sprintf("%s@example.com", key))
-		err := os.WriteFile(filepath.Join(gpgHome, fmt.Sprintf("%s-pubkey.gpg", key)),
+		out := combinedOutputOfCommand(c, gpgBinary, "--armor", "--export", fmt.Sprintf("%s@example.com", key))
+		err := ioutil.WriteFile(filepath.Join(s.gpgHome, fmt.Sprintf("%s-pubkey.gpg", key)),
 			[]byte(out), 0600)
-		require.NoError(t, err)
+		c.Assert(err, check.IsNil)
 	}
 }
 
-func (s *syncSuite) TearDownSuite() {
-	t := s.T()
+func (s *SyncSuite) TearDownSuite(c *check.C) {
 	if os.Getenv("SKOPEO_LOCAL_TESTS") == "1" {
 		return
 	}
 
+	if s.gpgHome != "" {
+		os.RemoveAll(s.gpgHome)
+	}
 	if s.registry != nil {
-		s.registry.tearDown()
+		s.registry.Close()
 	}
 	if s.cluster != nil {
-		s.cluster.tearDown(t)
+		s.cluster.tearDown(c)
 	}
 }
 
-func assertNumberOfManifestsInSubdirs(t *testing.T, dir string, expectedCount int) {
-	nManifests := 0
-	err := filepath.WalkDir(dir, func(path string, d fs.DirEntry, err error) error {
-		if err != nil {
-			return err
-		}
-		if !d.IsDir() && d.Name() == "manifest.json" {
-			nManifests++
-			return filepath.SkipDir
-		}
-		return nil
-	})
-	require.NoError(t, err)
-	assert.Equal(t, expectedCount, nManifests)
-}
-
-func (s *syncSuite) TestDocker2DirTagged() {
-	t := s.T()
-	tmpDir := t.TempDir()
+func (s *SyncSuite) TestDocker2DirTagged(c *check.C) {
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 
 	// FIXME: It would be nice to use one of the local Docker registries instead of needing an Internet connection.
 	image := pullableTaggedImage
 	imageRef, err := docker.ParseReference(fmt.Sprintf("//%s", image))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 	imagePath := imageRef.DockerReference().String()
 
 	dir1 := path.Join(tmpDir, "dir1")
 	dir2 := path.Join(tmpDir, "dir2")
 
 	// sync docker => dir
-	assertSkopeoSucceeds(t, "", "sync", "--scoped", "--src", "docker", "--dest", "dir", image, dir1)
+	assertSkopeoSucceeds(c, "", "sync", "--scoped", "--src", "docker", "--dest", "dir", image, dir1)
 	_, err = os.Stat(path.Join(dir1, imagePath, "manifest.json"))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
 	// copy docker => dir
-	assertSkopeoSucceeds(t, "", "copy", "docker://"+image, "dir:"+dir2)
+	assertSkopeoSucceeds(c, "", "copy", "docker://"+image, "dir:"+dir2)
 	_, err = os.Stat(path.Join(dir2, "manifest.json"))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
-	out := combinedOutputOfCommand(t, "diff", "-urN", path.Join(dir1, imagePath), dir2)
-	assert.Equal(t, "", out)
+	out := combinedOutputOfCommand(c, "diff", "-urN", path.Join(dir1, imagePath), dir2)
+	c.Assert(out, check.Equals, "")
 }
 
-func (s *syncSuite) TestDocker2DirTaggedAll() {
-	t := s.T()
-	tmpDir := t.TempDir()
+func (s *SyncSuite) TestDocker2DirTaggedAll(c *check.C) {
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 
 	// FIXME: It would be nice to use one of the local Docker registries instead of needing an Internet connection.
 	image := pullableTaggedManifestList
 	imageRef, err := docker.ParseReference(fmt.Sprintf("//%s", image))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 	imagePath := imageRef.DockerReference().String()
 
 	dir1 := path.Join(tmpDir, "dir1")
 	dir2 := path.Join(tmpDir, "dir2")
 
 	// sync docker => dir
-	assertSkopeoSucceeds(t, "", "sync", "--all", "--scoped", "--src", "docker", "--dest", "dir", image, dir1)
+	assertSkopeoSucceeds(c, "", "sync", "--all", "--scoped", "--src", "docker", "--dest", "dir", image, dir1)
 	_, err = os.Stat(path.Join(dir1, imagePath, "manifest.json"))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
 	// copy docker => dir
-	assertSkopeoSucceeds(t, "", "copy", "--all", "docker://"+image, "dir:"+dir2)
+	assertSkopeoSucceeds(c, "", "copy", "--all", "docker://"+image, "dir:"+dir2)
 	_, err = os.Stat(path.Join(dir2, "manifest.json"))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
-	out := combinedOutputOfCommand(t, "diff", "-urN", path.Join(dir1, imagePath), dir2)
-	assert.Equal(t, "", out)
+	out := combinedOutputOfCommand(c, "diff", "-urN", path.Join(dir1, imagePath), dir2)
+	c.Assert(out, check.Equals, "")
 }
 
-func (s *syncSuite) TestPreserveDigests() {
-	t := s.T()
-	tmpDir := t.TempDir()
+func (s *SyncSuite) TestPreserveDigests(c *check.C) {
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 
 	// FIXME: It would be nice to use one of the local Docker registries instead of needing an Internet connection.
 	image := pullableTaggedManifestList
 
 	// copy docker => dir
-	assertSkopeoSucceeds(t, "", "copy", "--all", "--preserve-digests", "docker://"+image, "dir:"+tmpDir)
-	_, err := os.Stat(path.Join(tmpDir, "manifest.json"))
-	require.NoError(t, err)
+	assertSkopeoSucceeds(c, "", "copy", "--all", "--preserve-digests", "docker://"+image, "dir:"+tmpDir)
+	_, err = os.Stat(path.Join(tmpDir, "manifest.json"))
+	c.Assert(err, check.IsNil)
 
-	assertSkopeoFails(t, ".*Instructed to preserve digests.*", "copy", "--all", "--preserve-digests", "--format=oci", "docker://"+image, "dir:"+tmpDir)
+	assertSkopeoFails(c, ".*Instructed to preserve digests.*", "copy", "--all", "--preserve-digests", "--format=oci", "docker://"+image, "dir:"+tmpDir)
 }
 
-func (s *syncSuite) TestScoped() {
-	t := s.T()
+func (s *SyncSuite) TestScoped(c *check.C) {
 	// FIXME: It would be nice to use one of the local Docker registries instead of needing an Internet connection.
 	image := pullableTaggedImage
 	imageRef, err := docker.ParseReference(fmt.Sprintf("//%s", image))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 	imagePath := imageRef.DockerReference().String()
 
-	dir1 := t.TempDir()
-	assertSkopeoSucceeds(t, "", "sync", "--src", "docker", "--dest", "dir", image, dir1)
+	dir1, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	assertSkopeoSucceeds(c, "", "sync", "--src", "docker", "--dest", "dir", image, dir1)
 	_, err = os.Stat(path.Join(dir1, path.Base(imagePath), "manifest.json"))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
-	assertSkopeoSucceeds(t, "", "sync", "--scoped", "--src", "docker", "--dest", "dir", image, dir1)
+	assertSkopeoSucceeds(c, "", "sync", "--scoped", "--src", "docker", "--dest", "dir", image, dir1)
 	_, err = os.Stat(path.Join(dir1, imagePath, "manifest.json"))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
+
+	os.RemoveAll(dir1)
 }
 
-func (s *syncSuite) TestDirIsNotOverwritten() {
-	t := s.T()
+func (s *SyncSuite) TestDirIsNotOverwritten(c *check.C) {
 	// FIXME: It would be nice to use one of the local Docker registries instead of needing an Internet connection.
 	image := pullableRepoWithLatestTag
 	imageRef, err := docker.ParseReference(fmt.Sprintf("//%s", image))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 	imagePath := imageRef.DockerReference().String()
 
 	// make a copy of the image in the local registry
-	assertSkopeoSucceeds(t, "", "copy", "--dest-tls-verify=false", "docker://"+image, "docker://"+path.Join(v2DockerRegistryURL, reference.Path(imageRef.DockerReference())))
+	assertSkopeoSucceeds(c, "", "copy", "--dest-tls-verify=false", "docker://"+image, "docker://"+path.Join(v2DockerRegistryURL, reference.Path(imageRef.DockerReference())))
 
 	//sync upstream image to dir, not scoped
-	dir1 := t.TempDir()
-	assertSkopeoSucceeds(t, "", "sync", "--src", "docker", "--dest", "dir", image, dir1)
+	dir1, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	assertSkopeoSucceeds(c, "", "sync", "--src", "docker", "--dest", "dir", image, dir1)
 	_, err = os.Stat(path.Join(dir1, path.Base(imagePath), "manifest.json"))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
 	//sync local registry image to dir, not scoped
-	assertSkopeoFails(t, ".*Refusing to overwrite destination directory.*", "sync", "--src-tls-verify=false", "--src", "docker", "--dest", "dir", path.Join(v2DockerRegistryURL, reference.Path(imageRef.DockerReference())), dir1)
+	assertSkopeoFails(c, ".*Refusing to overwrite destination directory.*", "sync", "--src-tls-verify=false", "--src", "docker", "--dest", "dir", path.Join(v2DockerRegistryURL, reference.Path(imageRef.DockerReference())), dir1)
 
 	//sync local registry image to dir, scoped
 	imageRef, err = docker.ParseReference(fmt.Sprintf("//%s", path.Join(v2DockerRegistryURL, reference.Path(imageRef.DockerReference()))))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 	imagePath = imageRef.DockerReference().String()
-	assertSkopeoSucceeds(t, "", "sync", "--scoped", "--src-tls-verify=false", "--src", "docker", "--dest", "dir", path.Join(v2DockerRegistryURL, reference.Path(imageRef.DockerReference())), dir1)
+	assertSkopeoSucceeds(c, "", "sync", "--scoped", "--src-tls-verify=false", "--src", "docker", "--dest", "dir", path.Join(v2DockerRegistryURL, reference.Path(imageRef.DockerReference())), dir1)
 	_, err = os.Stat(path.Join(dir1, imagePath, "manifest.json"))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
+	os.RemoveAll(dir1)
 }
 
-func (s *syncSuite) TestDocker2DirUntagged() {
-	t := s.T()
-	tmpDir := t.TempDir()
+func (s *SyncSuite) TestDocker2DirUntagged(c *check.C) {
+
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 
 	// FIXME: It would be nice to use one of the local Docker registries instead of needing an Internet connection.
 	image := pullableRepo
 	imageRef, err := docker.ParseReference(fmt.Sprintf("//%s", image))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 	imagePath := imageRef.DockerReference().String()
 
 	dir1 := path.Join(tmpDir, "dir1")
-	assertSkopeoSucceeds(t, "", "sync", "--scoped", "--src", "docker", "--dest", "dir", image, dir1)
+	assertSkopeoSucceeds(c, "", "sync", "--scoped", "--src", "docker", "--dest", "dir", image, dir1)
 
 	sysCtx := types.SystemContext{}
 	tags, err := docker.GetRepositoryTags(context.Background(), &sysCtx, imageRef)
-	require.NoError(t, err)
-	assert.NotZero(t, len(tags))
+	c.Assert(err, check.IsNil)
+	c.Check(len(tags), check.Not(check.Equals), 0)
 
 	nManifests, err := filepath.Glob(path.Join(dir1, path.Dir(imagePath), "*", "manifest.json"))
-	require.NoError(t, err)
-	assert.Len(t, nManifests, len(tags))
+	c.Assert(err, check.IsNil)
+	c.Assert(len(nManifests), check.Equals, len(tags))
 }
 
-func (s *syncSuite) TestYamlUntagged() {
-	t := s.T()
-	tmpDir := t.TempDir()
+func (s *SyncSuite) TestYamlUntagged(c *check.C) {
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 	dir1 := path.Join(tmpDir, "dir1")
 
 	image := pullableRepo
 	imageRef, err := docker.ParseReference(fmt.Sprintf("//%s", image))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 	imagePath := imageRef.DockerReference().Name()
 
 	sysCtx := types.SystemContext{}
 	tags, err := docker.GetRepositoryTags(context.Background(), &sysCtx, imageRef)
-	require.NoError(t, err)
-	assert.NotZero(t, len(tags))
+	c.Assert(err, check.IsNil)
+	c.Check(len(tags), check.Not(check.Equals), 0)
 
 	yamlConfig := fmt.Sprintf(`
 %s:
@@ -289,9 +278,8 @@ func (s *syncSuite) TestYamlUntagged() {
 
 	// sync to the local registry
 	yamlFile := path.Join(tmpDir, "registries.yaml")
-	err = os.WriteFile(yamlFile, []byte(yamlConfig), 0644)
-	require.NoError(t, err)
-	assertSkopeoSucceeds(t, "", "sync", "--scoped", "--src", "yaml", "--dest", "docker", "--dest-tls-verify=false", yamlFile, v2DockerRegistryURL)
+	ioutil.WriteFile(yamlFile, []byte(yamlConfig), 0644)
+	assertSkopeoSucceeds(c, "", "sync", "--scoped", "--src", "yaml", "--dest", "docker", "--dest-tls-verify=false", yamlFile, v2DockerRegistryURL)
 	// sync back from local registry to a folder
 	os.Remove(yamlFile)
 	yamlConfig = fmt.Sprintf(`
@@ -301,25 +289,39 @@ func (s *syncSuite) TestYamlUntagged() {
     %s: []
 `, v2DockerRegistryURL, imagePath)
 
-	err = os.WriteFile(yamlFile, []byte(yamlConfig), 0644)
-	require.NoError(t, err)
-	assertSkopeoSucceeds(t, "", "sync", "--scoped", "--src", "yaml", "--dest", "dir", yamlFile, dir1)
+	ioutil.WriteFile(yamlFile, []byte(yamlConfig), 0644)
+	assertSkopeoSucceeds(c, "", "sync", "--scoped", "--src", "yaml", "--dest", "dir", yamlFile, dir1)
 
 	sysCtx = types.SystemContext{
 		DockerInsecureSkipTLSVerify: types.NewOptionalBool(true),
 	}
 	localImageRef, err := docker.ParseReference(fmt.Sprintf("//%s/%s", v2DockerRegistryURL, imagePath))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 	localTags, err := docker.GetRepositoryTags(context.Background(), &sysCtx, localImageRef)
-	require.NoError(t, err)
-	assert.NotZero(t, len(localTags))
-	assert.Len(t, localTags, len(tags))
-	assertNumberOfManifestsInSubdirs(t, dir1, len(tags))
+	c.Assert(err, check.IsNil)
+	c.Check(len(localTags), check.Not(check.Equals), 0)
+	c.Assert(len(localTags), check.Equals, len(tags))
+
+	nManifests := 0
+	//count the number of manifest.json in dir1
+	err = filepath.Walk(dir1, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() && info.Name() == "manifest.json" {
+			nManifests++
+			return filepath.SkipDir
+		}
+		return nil
+	})
+	c.Assert(err, check.IsNil)
+	c.Assert(nManifests, check.Equals, len(tags))
 }
 
-func (s *syncSuite) TestYamlRegex2Dir() {
-	t := s.T()
-	tmpDir := t.TempDir()
+func (s *SyncSuite) TestYamlRegex2Dir(c *check.C) {
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 	dir1 := path.Join(tmpDir, "dir1")
 
 	yamlConfig := `
@@ -329,18 +331,31 @@ registry.k8s.io:
 `
 	// the       ↑    regex strings always matches only 2 images
 	var nTags = 2
-	assert.NotZero(t, nTags)
+	c.Assert(nTags, check.Not(check.Equals), 0)
 
 	yamlFile := path.Join(tmpDir, "registries.yaml")
-	err := os.WriteFile(yamlFile, []byte(yamlConfig), 0644)
-	require.NoError(t, err)
-	assertSkopeoSucceeds(t, "", "sync", "--scoped", "--src", "yaml", "--dest", "dir", yamlFile, dir1)
-	assertNumberOfManifestsInSubdirs(t, dir1, nTags)
+	ioutil.WriteFile(yamlFile, []byte(yamlConfig), 0644)
+	assertSkopeoSucceeds(c, "", "sync", "--scoped", "--src", "yaml", "--dest", "dir", yamlFile, dir1)
+
+	nManifests := 0
+	err = filepath.Walk(dir1, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() && info.Name() == "manifest.json" {
+			nManifests++
+			return filepath.SkipDir
+		}
+		return nil
+	})
+	c.Assert(err, check.IsNil)
+	c.Assert(nManifests, check.Equals, nTags)
 }
 
-func (s *syncSuite) TestYamlDigest2Dir() {
-	t := s.T()
-	tmpDir := t.TempDir()
+func (s *SyncSuite) TestYamlDigest2Dir(c *check.C) {
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 	dir1 := path.Join(tmpDir, "dir1")
 
 	yamlConfig := `
@@ -350,15 +365,28 @@ registry.k8s.io:
     - sha256:59eec8837a4d942cc19a52b8c09ea75121acc38114a2c68b98983ce9356b8610
 `
 	yamlFile := path.Join(tmpDir, "registries.yaml")
-	err := os.WriteFile(yamlFile, []byte(yamlConfig), 0644)
-	require.NoError(t, err)
-	assertSkopeoSucceeds(t, "", "sync", "--scoped", "--src", "yaml", "--dest", "dir", yamlFile, dir1)
-	assertNumberOfManifestsInSubdirs(t, dir1, 1)
+	ioutil.WriteFile(yamlFile, []byte(yamlConfig), 0644)
+	assertSkopeoSucceeds(c, "", "sync", "--scoped", "--src", "yaml", "--dest", "dir", yamlFile, dir1)
+
+	nManifests := 0
+	err = filepath.Walk(dir1, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() && info.Name() == "manifest.json" {
+			nManifests++
+			return filepath.SkipDir
+		}
+		return nil
+	})
+	c.Assert(err, check.IsNil)
+	c.Assert(nManifests, check.Equals, 1)
 }
 
-func (s *syncSuite) TestYaml2Dir() {
-	t := s.T()
-	tmpDir := t.TempDir()
+func (s *SyncSuite) TestYaml2Dir(c *check.C) {
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 	dir1 := path.Join(tmpDir, "dir1")
 
 	yamlConfig := `
@@ -386,26 +414,39 @@ quay.io:
 			nTags++
 		}
 	}
-	assert.NotZero(t, nTags)
+	c.Assert(nTags, check.Not(check.Equals), 0)
 
 	yamlFile := path.Join(tmpDir, "registries.yaml")
-	err := os.WriteFile(yamlFile, []byte(yamlConfig), 0644)
-	require.NoError(t, err)
-	assertSkopeoSucceeds(t, "", "sync", "--scoped", "--src", "yaml", "--dest", "dir", yamlFile, dir1)
-	assertNumberOfManifestsInSubdirs(t, dir1, nTags)
+	ioutil.WriteFile(yamlFile, []byte(yamlConfig), 0644)
+	assertSkopeoSucceeds(c, "", "sync", "--scoped", "--src", "yaml", "--dest", "dir", yamlFile, dir1)
+
+	nManifests := 0
+	err = filepath.Walk(dir1, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() && info.Name() == "manifest.json" {
+			nManifests++
+			return filepath.SkipDir
+		}
+		return nil
+	})
+	c.Assert(err, check.IsNil)
+	c.Assert(nManifests, check.Equals, nTags)
 }
 
-func (s *syncSuite) TestYamlTLSVerify() {
-	t := s.T()
+func (s *SyncSuite) TestYamlTLSVerify(c *check.C) {
 	const localRegURL = "docker://" + v2DockerRegistryURL + "/"
-	tmpDir := t.TempDir()
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 	dir1 := path.Join(tmpDir, "dir1")
 	image := pullableRepoWithLatestTag
 	tag := "latest"
 
 	// FIXME: It would be nice to use one of the local Docker registries instead of needing an Internet connection.
 	// copy docker => docker
-	assertSkopeoSucceeds(t, "", "copy", "--dest-tls-verify=false", "docker://"+image+":"+tag, localRegURL+image+":"+tag)
+	assertSkopeoSucceeds(c, "", "copy", "--dest-tls-verify=false", "docker://"+image+":"+tag, localRegURL+image+":"+tag)
 
 	yamlTemplate := `
 %s:
@@ -417,7 +458,7 @@ func (s *syncSuite) TestYamlTLSVerify() {
 	testCfg := []struct {
 		tlsVerify string
 		msg       string
-		checker   func(t *testing.T, regexp string, args ...string)
+		checker   func(c *check.C, regexp string, args ...string)
 	}{
 		{
 			tlsVerify: "tls-verify: false",
@@ -440,19 +481,19 @@ func (s *syncSuite) TestYamlTLSVerify() {
 	for _, cfg := range testCfg {
 		yamlConfig := fmt.Sprintf(yamlTemplate, v2DockerRegistryURL, cfg.tlsVerify, image, tag)
 		yamlFile := path.Join(tmpDir, "registries.yaml")
-		err := os.WriteFile(yamlFile, []byte(yamlConfig), 0644)
-		require.NoError(t, err)
+		ioutil.WriteFile(yamlFile, []byte(yamlConfig), 0644)
 
-		cfg.checker(t, cfg.msg, "sync", "--scoped", "--src", "yaml", "--dest", "dir", yamlFile, dir1)
+		cfg.checker(c, cfg.msg, "sync", "--scoped", "--src", "yaml", "--dest", "dir", yamlFile, dir1)
 		os.Remove(yamlFile)
 		os.RemoveAll(dir1)
 	}
 
 }
 
-func (s *syncSuite) TestSyncManifestOutput() {
-	t := s.T()
-	tmpDir := t.TempDir()
+func (s *SyncSuite) TestSyncManifestOutput(c *check.C) {
+	tmpDir, err := ioutil.TempDir("", "sync-manifest-output")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 
 	destDir1 := filepath.Join(tmpDir, "dest1")
 	destDir2 := filepath.Join(tmpDir, "dest2")
@@ -461,162 +502,168 @@ func (s *syncSuite) TestSyncManifestOutput() {
 	//Split image:tag path from image URI for manifest comparison
 	imageDir := pullableTaggedImage[strings.LastIndex(pullableTaggedImage, "/")+1:]
 
-	assertSkopeoSucceeds(t, "", "sync", "--format=oci", "--all", "--src", "docker", "--dest", "dir", pullableTaggedImage, destDir1)
-	verifyManifestMIMEType(t, filepath.Join(destDir1, imageDir), imgspecv1.MediaTypeImageManifest)
-	assertSkopeoSucceeds(t, "", "sync", "--format=v2s2", "--all", "--src", "docker", "--dest", "dir", pullableTaggedImage, destDir2)
-	verifyManifestMIMEType(t, filepath.Join(destDir2, imageDir), manifest.DockerV2Schema2MediaType)
-	assertSkopeoSucceeds(t, "", "sync", "--format=v2s1", "--all", "--src", "docker", "--dest", "dir", pullableTaggedImage, destDir3)
-	verifyManifestMIMEType(t, filepath.Join(destDir3, imageDir), manifest.DockerV2Schema1SignedMediaType)
+	assertSkopeoSucceeds(c, "", "sync", "--format=oci", "--all", "--src", "docker", "--dest", "dir", pullableTaggedImage, destDir1)
+	verifyManifestMIMEType(c, filepath.Join(destDir1, imageDir), imgspecv1.MediaTypeImageManifest)
+	assertSkopeoSucceeds(c, "", "sync", "--format=v2s2", "--all", "--src", "docker", "--dest", "dir", pullableTaggedImage, destDir2)
+	verifyManifestMIMEType(c, filepath.Join(destDir2, imageDir), manifest.DockerV2Schema2MediaType)
+	assertSkopeoSucceeds(c, "", "sync", "--format=v2s1", "--all", "--src", "docker", "--dest", "dir", pullableTaggedImage, destDir3)
+	verifyManifestMIMEType(c, filepath.Join(destDir3, imageDir), manifest.DockerV2Schema1SignedMediaType)
 }
 
-func (s *syncSuite) TestDocker2DockerTagged() {
-	t := s.T()
+func (s *SyncSuite) TestDocker2DockerTagged(c *check.C) {
 	const localRegURL = "docker://" + v2DockerRegistryURL + "/"
 
-	tmpDir := t.TempDir()
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 
 	// FIXME: It would be nice to use one of the local Docker registries instead of needing an Internet connection.
 	image := pullableTaggedImage
 	imageRef, err := docker.ParseReference(fmt.Sprintf("//%s", image))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 	imagePath := imageRef.DockerReference().String()
 
 	dir1 := path.Join(tmpDir, "dir1")
 	dir2 := path.Join(tmpDir, "dir2")
 
 	// sync docker => docker
-	assertSkopeoSucceeds(t, "", "sync", "--scoped", "--dest-tls-verify=false", "--src", "docker", "--dest", "docker", image, v2DockerRegistryURL)
+	assertSkopeoSucceeds(c, "", "sync", "--scoped", "--dest-tls-verify=false", "--src", "docker", "--dest", "docker", image, v2DockerRegistryURL)
 
 	// copy docker => dir
-	assertSkopeoSucceeds(t, "", "copy", "docker://"+image, "dir:"+dir1)
+	assertSkopeoSucceeds(c, "", "copy", "docker://"+image, "dir:"+dir1)
 	_, err = os.Stat(path.Join(dir1, "manifest.json"))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
 	// copy docker => dir
-	assertSkopeoSucceeds(t, "", "copy", "--src-tls-verify=false", localRegURL+imagePath, "dir:"+dir2)
+	assertSkopeoSucceeds(c, "", "copy", "--src-tls-verify=false", localRegURL+imagePath, "dir:"+dir2)
 	_, err = os.Stat(path.Join(dir2, "manifest.json"))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
-	out := combinedOutputOfCommand(t, "diff", "-urN", dir1, dir2)
-	assert.Equal(t, "", out)
+	out := combinedOutputOfCommand(c, "diff", "-urN", dir1, dir2)
+	c.Assert(out, check.Equals, "")
 }
 
-func (s *syncSuite) TestDir2DockerTagged() {
-	t := s.T()
+func (s *SyncSuite) TestDir2DockerTagged(c *check.C) {
 	const localRegURL = "docker://" + v2DockerRegistryURL + "/"
 
-	tmpDir := t.TempDir()
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 
 	// FIXME: It would be nice to use one of the local Docker registries instead of needing an Internet connection.
 	image := pullableRepoWithLatestTag
 
 	dir1 := path.Join(tmpDir, "dir1")
-	err := os.Mkdir(dir1, 0755)
-	require.NoError(t, err)
+	err = os.Mkdir(dir1, 0755)
+	c.Assert(err, check.IsNil)
 	dir2 := path.Join(tmpDir, "dir2")
 	err = os.Mkdir(dir2, 0755)
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
 	// create leading dirs
 	err = os.MkdirAll(path.Dir(path.Join(dir1, image)), 0755)
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
 	// copy docker => dir
-	assertSkopeoSucceeds(t, "", "copy", "docker://"+image, "dir:"+path.Join(dir1, image))
+	assertSkopeoSucceeds(c, "", "copy", "docker://"+image, "dir:"+path.Join(dir1, image))
 	_, err = os.Stat(path.Join(dir1, image, "manifest.json"))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
 	// sync dir => docker
-	assertSkopeoSucceeds(t, "", "sync", "--scoped", "--dest-tls-verify=false", "--src", "dir", "--dest", "docker", dir1, v2DockerRegistryURL)
+	assertSkopeoSucceeds(c, "", "sync", "--scoped", "--dest-tls-verify=false", "--src", "dir", "--dest", "docker", dir1, v2DockerRegistryURL)
 
 	// create leading dirs
 	err = os.MkdirAll(path.Dir(path.Join(dir2, image)), 0755)
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
 	// copy docker => dir
-	assertSkopeoSucceeds(t, "", "copy", "--src-tls-verify=false", localRegURL+image, "dir:"+path.Join(dir2, image))
+	assertSkopeoSucceeds(c, "", "copy", "--src-tls-verify=false", localRegURL+image, "dir:"+path.Join(dir2, image))
 	_, err = os.Stat(path.Join(dir2, image, "manifest.json"))
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 
-	out := combinedOutputOfCommand(t, "diff", "-urN", dir1, dir2)
-	assert.Equal(t, "", out)
+	out := combinedOutputOfCommand(c, "diff", "-urN", dir1, dir2)
+	c.Assert(out, check.Equals, "")
 }
 
-func (s *syncSuite) TestFailsWithDir2Dir() {
-	t := s.T()
-	tmpDir := t.TempDir()
+func (s *SyncSuite) TestFailsWithDir2Dir(c *check.C) {
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 
 	dir1 := path.Join(tmpDir, "dir1")
 	dir2 := path.Join(tmpDir, "dir2")
 
 	// sync dir => dir is not allowed
-	assertSkopeoFails(t, ".*sync from 'dir' to 'dir' not implemented.*", "sync", "--scoped", "--src", "dir", "--dest", "dir", dir1, dir2)
+	assertSkopeoFails(c, ".*sync from 'dir' to 'dir' not implemented.*", "sync", "--scoped", "--src", "dir", "--dest", "dir", dir1, dir2)
 }
 
-func (s *syncSuite) TestFailsNoSourceImages() {
-	t := s.T()
-	tmpDir := t.TempDir()
+func (s *SyncSuite) TestFailsNoSourceImages(c *check.C) {
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 
-	assertSkopeoFails(t, ".*No images to sync found in .*",
+	assertSkopeoFails(c, ".*No images to sync found in .*",
 		"sync", "--scoped", "--dest-tls-verify=false", "--src", "dir", "--dest", "docker", tmpDir, v2DockerRegistryURL)
 
-	assertSkopeoFails(t, ".*Error determining repository tags for repo docker.io/library/hopefully_no_images_will_ever_be_called_like_this: fetching tags list: requested access to the resource is denied.*",
+	assertSkopeoFails(c, ".*No images to sync found in .*",
 		"sync", "--scoped", "--dest-tls-verify=false", "--src", "docker", "--dest", "docker", "hopefully_no_images_will_ever_be_called_like_this", v2DockerRegistryURL)
 }
 
-func (s *syncSuite) TestFailsWithDockerSourceNoRegistry() {
-	t := s.T()
+func (s *SyncSuite) TestFailsWithDockerSourceNoRegistry(c *check.C) {
 	const regURL = "google.com/namespace/imagename"
 
-	tmpDir := t.TempDir()
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 
 	//untagged
-	assertSkopeoFails(t, ".*StatusCode: 404.*",
+	assertSkopeoFails(c, ".*invalid status code from registry 404.*",
 		"sync", "--scoped", "--src", "docker", "--dest", "dir", regURL, tmpDir)
 
 	//tagged
-	assertSkopeoFails(t, ".*StatusCode: 404.*",
+	assertSkopeoFails(c, ".*invalid status code from registry 404.*",
 		"sync", "--scoped", "--src", "docker", "--dest", "dir", regURL+":thetag", tmpDir)
 }
 
-func (s *syncSuite) TestFailsWithDockerSourceUnauthorized() {
-	t := s.T()
+func (s *SyncSuite) TestFailsWithDockerSourceUnauthorized(c *check.C) {
 	const repo = "privateimagenamethatshouldnotbepublic"
-	tmpDir := t.TempDir()
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 
 	//untagged
-	assertSkopeoFails(t, ".*requested access to the resource is denied.*",
+	assertSkopeoFails(c, ".*Registry disallows tag list retrieval.*",
 		"sync", "--scoped", "--src", "docker", "--dest", "dir", repo, tmpDir)
 
 	//tagged
-	assertSkopeoFails(t, ".*requested access to the resource is denied.*",
+	assertSkopeoFails(c, ".*unauthorized: authentication required.*",
 		"sync", "--scoped", "--src", "docker", "--dest", "dir", repo+":thetag", tmpDir)
 }
 
-func (s *syncSuite) TestFailsWithDockerSourceNotExisting() {
-	t := s.T()
+func (s *SyncSuite) TestFailsWithDockerSourceNotExisting(c *check.C) {
 	repo := path.Join(v2DockerRegistryURL, "imagedoesnotexist")
-	tmpDir := t.TempDir()
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	defer os.RemoveAll(tmpDir)
 
 	//untagged
-	assertSkopeoFails(t, ".*repository name not known to registry.*",
+	assertSkopeoFails(c, ".*invalid status code from registry 404.*",
 		"sync", "--scoped", "--src-tls-verify=false", "--src", "docker", "--dest", "dir", repo, tmpDir)
 
 	//tagged
-	assertSkopeoFails(t, ".*reading manifest.*",
+	assertSkopeoFails(c, ".*reading manifest.*",
 		"sync", "--scoped", "--src-tls-verify=false", "--src", "docker", "--dest", "dir", repo+":thetag", tmpDir)
 }
 
-func (s *syncSuite) TestFailsWithDirSourceNotExisting() {
-	t := s.T()
+func (s *SyncSuite) TestFailsWithDirSourceNotExisting(c *check.C) {
 	// Make sure the dir does not exist!
-	tmpDir := t.TempDir()
-	tmpDir = filepath.Join(tmpDir, "this-does-not-exist")
-	err := os.RemoveAll(tmpDir)
-	require.NoError(t, err)
+	tmpDir, err := ioutil.TempDir("", "skopeo-sync-test")
+	c.Assert(err, check.IsNil)
+	err = os.RemoveAll(tmpDir)
+	c.Assert(err, check.IsNil)
 	_, err = os.Stat(path.Join(tmpDir))
-	assert.True(t, os.IsNotExist(err))
+	c.Check(os.IsNotExist(err), check.Equals, true)
 
-	assertSkopeoFails(t, ".*no such file or directory.*",
+	assertSkopeoFails(c, ".*no such file or directory.*",
 		"sync", "--scoped", "--dest-tls-verify=false", "--src", "dir", "--dest", "docker", tmpDir, v2DockerRegistryURL)
 }

integration/utils.go

@@ -2,43 +2,38 @@ package main
 
 import (
 	"bytes"
-	"compress/gzip"
-	"encoding/json"
 	"io"
+	"io/ioutil"
 	"net"
-	"net/netip"
-	"os"
 	"os/exec"
 	"path/filepath"
 	"strings"
-	"testing"
 	"time"
 
 	"github.com/containers/image/v5/manifest"
-	"github.com/opencontainers/go-digest"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
+	"gopkg.in/check.v1"
 )
 
 const skopeoBinary = "skopeo"
+const decompressDirsBinary = "./decompress-dirs.sh"
 
 const testFQIN = "docker://quay.io/libpod/busybox" // tag left off on purpose, some tests need to add a special one
 const testFQIN64 = "docker://quay.io/libpod/busybox:amd64"
-const testFQINMultiLayer = "docker://quay.io/libpod/alpine_nginx:latest" // multi-layer
+const testFQINMultiLayer = "docker://quay.io/libpod/alpine_nginx:master" // multi-layer
 
-// consumeAndLogOutputStream takes (f, err) from an exec.*Pipe(), and causes all output to it to be logged to t.
-func consumeAndLogOutputStream(t *testing.T, id string, f io.ReadCloser, err error) {
-	require.NoError(t, err)
+// consumeAndLogOutputStream takes (f, err) from an exec.*Pipe(), and causes all output to it to be logged to c.
+func consumeAndLogOutputStream(c *check.C, id string, f io.ReadCloser, err error) {
+	c.Assert(err, check.IsNil)
 	go func() {
 		defer func() {
 			f.Close()
-			t.Logf("Output %s: Closed", id)
+			c.Logf("Output %s: Closed", id)
 		}()
 		buf := make([]byte, 1024)
 		for {
-			t.Logf("Output %s: waiting", id)
+			c.Logf("Output %s: waiting", id)
 			n, err := f.Read(buf)
-			t.Logf("Output %s: got %d,%#v: %s", id, n, err, strings.TrimSuffix(string(buf[:n]), "\n"))
+			c.Logf("Output %s: got %d,%#v: %s", id, n, err, strings.TrimSuffix(string(buf[:n]), "\n"))
 			if n <= 0 {
 				break
 			}
@@ -46,73 +41,72 @@ func consumeAndLogOutputStream(t *testing.T, id string, f io.ReadCloser, err err
 	}()
 }
 
-// consumeAndLogOutputs causes all output to stdout and stderr from an *exec.Cmd to be logged to c.
-func consumeAndLogOutputs(t *testing.T, id string, cmd *exec.Cmd) {
+// consumeAndLogOutputs causes all output to stdout and stderr from an *exec.Cmd to be logged to c
+func consumeAndLogOutputs(c *check.C, id string, cmd *exec.Cmd) {
 	stdout, err := cmd.StdoutPipe()
-	consumeAndLogOutputStream(t, id+" stdout", stdout, err)
+	consumeAndLogOutputStream(c, id+" stdout", stdout, err)
 	stderr, err := cmd.StderrPipe()
-	consumeAndLogOutputStream(t, id+" stderr", stderr, err)
+	consumeAndLogOutputStream(c, id+" stderr", stderr, err)
 }
 
 // combinedOutputOfCommand runs a command as if exec.Command().CombinedOutput(), verifies that the exit status is 0, and returns the output,
 // or terminates c on failure.
-func combinedOutputOfCommand(t *testing.T, name string, args ...string) string {
-	t.Logf("Running %s %s", name, strings.Join(args, " "))
+func combinedOutputOfCommand(c *check.C, name string, args ...string) string {
+	c.Logf("Running %s %s", name, strings.Join(args, " "))
 	out, err := exec.Command(name, args...).CombinedOutput()
-	require.NoError(t, err, "%s", out)
+	c.Assert(err, check.IsNil, check.Commentf("%s", out))
 	return string(out)
 }
 
 // assertSkopeoSucceeds runs a skopeo command as if exec.Command().CombinedOutput, verifies that the exit status is 0,
 // and optionally that the output matches a multi-line regexp if it is nonempty;
 // or terminates c on failure
-func assertSkopeoSucceeds(t *testing.T, regexp string, args ...string) {
-	t.Logf("Running %s %s", skopeoBinary, strings.Join(args, " "))
+func assertSkopeoSucceeds(c *check.C, regexp string, args ...string) {
+	c.Logf("Running %s %s", skopeoBinary, strings.Join(args, " "))
 	out, err := exec.Command(skopeoBinary, args...).CombinedOutput()
-	assert.NoError(t, err, "%s", out)
+	c.Assert(err, check.IsNil, check.Commentf("%s", out))
 	if regexp != "" {
-		assert.Regexp(t, "(?s)"+regexp, string(out)) // (?s) : '.' will also match newlines
+		c.Assert(string(out), check.Matches, "(?s)"+regexp) // (?s) : '.' will also match newlines
 	}
 }
 
 // assertSkopeoFails runs a skopeo command as if exec.Command().CombinedOutput, verifies that the exit status is 0,
 // and that the output matches a multi-line regexp;
 // or terminates c on failure
-func assertSkopeoFails(t *testing.T, regexp string, args ...string) {
-	t.Logf("Running %s %s", skopeoBinary, strings.Join(args, " "))
+func assertSkopeoFails(c *check.C, regexp string, args ...string) {
+	c.Logf("Running %s %s", skopeoBinary, strings.Join(args, " "))
 	out, err := exec.Command(skopeoBinary, args...).CombinedOutput()
-	assert.Error(t, err, "%s", out)
-	assert.Regexp(t, "(?s)"+regexp, string(out)) // (?s) : '.' will also match newlines
+	c.Assert(err, check.NotNil, check.Commentf("%s", out))
+	c.Assert(string(out), check.Matches, "(?s)"+regexp) // (?s) : '.' will also match newlines
 }
 
 // runCommandWithInput runs a command as if exec.Command(), sending it the input to stdin,
 // and verifies that the exit status is 0, or terminates c on failure.
-func runCommandWithInput(t *testing.T, input string, name string, args ...string) {
+func runCommandWithInput(c *check.C, input string, name string, args ...string) {
 	cmd := exec.Command(name, args...)
-	runExecCmdWithInput(t, cmd, input)
+	runExecCmdWithInput(c, cmd, input)
 }
 
 // runExecCmdWithInput runs an exec.Cmd, sending it the input to stdin,
 // and verifies that the exit status is 0, or terminates c on failure.
-func runExecCmdWithInput(t *testing.T, cmd *exec.Cmd, input string) {
-	t.Logf("Running %s %s", cmd.Path, strings.Join(cmd.Args, " "))
-	consumeAndLogOutputs(t, cmd.Path+" "+strings.Join(cmd.Args, " "), cmd)
+func runExecCmdWithInput(c *check.C, cmd *exec.Cmd, input string) {
+	c.Logf("Running %s %s", cmd.Path, strings.Join(cmd.Args, " "))
+	consumeAndLogOutputs(c, cmd.Path+" "+strings.Join(cmd.Args, " "), cmd)
 	stdin, err := cmd.StdinPipe()
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 	err = cmd.Start()
-	require.NoError(t, err)
-	_, err = io.WriteString(stdin, input)
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
+	_, err = stdin.Write([]byte(input))
+	c.Assert(err, check.IsNil)
 	err = stdin.Close()
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 	err = cmd.Wait()
-	assert.NoError(t, err)
+	c.Assert(err, check.IsNil)
 }
 
 // isPortOpen returns true iff the specified port on localhost is open.
-func isPortOpen(port uint16) bool {
-	ap := netip.AddrPortFrom(netip.AddrFrom4([4]byte{127, 0, 0, 1}), port)
-	conn, err := net.DialTCP("tcp", nil, net.TCPAddrFromAddrPort(ap))
+func isPortOpen(port int) bool {
+	conn, err := net.DialTCP("tcp", nil, &net.TCPAddr{IP: net.IPv4(127, 0, 0, 1), Port: port})
 	if err != nil {
 		return false
 	}
@@ -124,29 +118,29 @@ func isPortOpen(port uint16) bool {
 // The checking can be aborted by sending a value to the terminate channel, which the caller should
 // always do using
 // defer func() {terminate <- true}()
-func newPortChecker(t *testing.T, port uint16) (portOpen <-chan bool, terminate chan<- bool) {
+func newPortChecker(c *check.C, port int) (portOpen <-chan bool, terminate chan<- bool) {
 	portOpenBidi := make(chan bool)
 	// Buffered, so that sending a terminate request after the goroutine has exited does not block.
 	terminateBidi := make(chan bool, 1)
 
 	go func() {
 		defer func() {
-			t.Logf("Port checker for port %d exiting", port)
+			c.Logf("Port checker for port %d exiting", port)
 		}()
 		for {
-			t.Logf("Checking for port %d...", port)
+			c.Logf("Checking for port %d...", port)
 			if isPortOpen(port) {
-				t.Logf("Port %d open", port)
+				c.Logf("Port %d open", port)
 				portOpenBidi <- true
 				return
 			}
-			t.Logf("Sleeping for port %d", port)
+			c.Logf("Sleeping for port %d", port)
 			sleepChan := time.After(100 * time.Millisecond)
 			select {
 			case <-sleepChan: // Try again
-				t.Logf("Sleeping for port %d done, will retry", port)
+				c.Logf("Sleeping for port %d done, will retry", port)
 			case <-terminateBidi:
-				t.Logf("Check for port %d terminated", port)
+				c.Logf("Check for port %d terminated", port)
 				return
 			}
 		}
@@ -166,126 +160,56 @@ func modifyEnviron(env []string, name, value string) []string {
 	return append(res, prefix+value)
 }
 
-// fileFromFixture applies edits to inputPath and returns a path to the temporary file.
+// fileFromFixtureFixture applies edits to inputPath and returns a path to the temporary file.
 // Callers should defer os.Remove(the_returned_path)
-func fileFromFixture(t *testing.T, inputPath string, edits map[string]string) string {
-	contents, err := os.ReadFile(inputPath)
-	require.NoError(t, err)
+func fileFromFixture(c *check.C, inputPath string, edits map[string]string) string {
+	contents, err := ioutil.ReadFile(inputPath)
+	c.Assert(err, check.IsNil)
 	for template, value := range edits {
-		updated := bytes.ReplaceAll(contents, []byte(template), []byte(value))
-		require.NotEqual(t, contents, updated, "Replacing %s in %#v failed", template, string(contents)) // Verify that the template has matched something and we are not silently ignoring it.
+		updated := bytes.Replace(contents, []byte(template), []byte(value), -1)
+		c.Assert(bytes.Equal(updated, contents), check.Equals, false, check.Commentf("Replacing %s in %#v failed", template, string(contents))) // Verify that the template has matched something and we are not silently ignoring it.
 		contents = updated
 	}
 
-	file, err := os.CreateTemp("", "policy.json")
-	require.NoError(t, err)
+	file, err := ioutil.TempFile("", "policy.json")
+	c.Assert(err, check.IsNil)
 	path := file.Name()
 
 	_, err = file.Write(contents)
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 	err = file.Close()
-	require.NoError(t, err)
+	c.Assert(err, check.IsNil)
 	return path
 }
 
-// decompressDirs decompresses specified dir:-formatted directories
-func decompressDirs(t *testing.T, dirs ...string) {
-	t.Logf("Decompressing %s", strings.Join(dirs, " "))
-	for i, dir := range dirs {
-		m, err := os.ReadFile(filepath.Join(dir, "manifest.json"))
-		require.NoError(t, err)
-		t.Logf("manifest %d before: %s", i+1, string(m))
-
-		decompressDir(t, dir)
-
-		m, err = os.ReadFile(filepath.Join(dir, "manifest.json"))
-		require.NoError(t, err)
-		t.Logf("manifest %d after: %s", i+1, string(m))
+// runDecompressDirs runs decompress-dirs.sh using exec.Command().CombinedOutput, verifies that the exit status is 0,
+// and optionally that the output matches a multi-line regexp if it is nonempty; or terminates c on failure
+func runDecompressDirs(c *check.C, regexp string, args ...string) {
+	c.Logf("Running %s %s", decompressDirsBinary, strings.Join(args, " "))
+	for i, dir := range args {
+		m, err := ioutil.ReadFile(filepath.Join(dir, "manifest.json"))
+		c.Assert(err, check.IsNil)
+		c.Logf("manifest %d before: %s", i+1, string(m))
 	}
-}
-
-// getRawMapField assigns a value of rawMap[key] to dest,
-// failing if it does not exist or if it doesn’t have the expected type
-func getRawMapField[T any](t *testing.T, rawMap map[string]any, key string, dest *T) {
-	rawValue, ok := rawMap[key]
-	require.True(t, ok, key)
-	value, ok := rawValue.(T)
-	require.True(t, ok, key, "%#v", value)
-	*dest = value
-}
-
-// decompressDir modifies a dir:-formatted directory to replace gzip-compressed layers with uncompressed variants,
-// and to use a ~canonical formatting of manifest.json.
-func decompressDir(t *testing.T, dir string) {
-	// This is, overall, very dumb; the “obvious” way would be to invoke skopeo to decompress,
-	// or at least to use c/image to parse/format the manifest.
-	//
-	// But this is used to test (aspects of) those code paths… so, it’s acceptable for this to be
-	// dumb and to make assumptions about the data, but it should not share code.
-
-	manifestBlob, err := os.ReadFile(filepath.Join(dir, "manifest.json"))
-	require.NoError(t, err)
-	var rawManifest map[string]any
-	err = json.Unmarshal(manifestBlob, &rawManifest)
-	require.NoError(t, err)
-	var rawLayers []any
-	getRawMapField(t, rawManifest, "layers", &rawLayers)
-	for i, rawLayerValue := range rawLayers {
-		rawLayer, ok := rawLayerValue.(map[string]any)
-		require.True(t, ok)
-		var digestString string
-		getRawMapField(t, rawLayer, "digest", &digestString)
-		compressedDigest, err := digest.Parse(digestString)
-		require.NoError(t, err)
-		if compressedDigest.String() == "sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" { // An empty file
-			continue
+	out, err := exec.Command(decompressDirsBinary, args...).CombinedOutput()
+	c.Assert(err, check.IsNil, check.Commentf("%s", out))
+	for i, dir := range args {
+		if len(out) > 0 {
+			c.Logf("output: %s", out)
 		}
-
-		compressedPath := filepath.Join(dir, compressedDigest.Encoded())
-		compressedStream, err := os.Open(compressedPath)
-		require.NoError(t, err)
-		defer compressedStream.Close()
-
-		uncompressedStream, err := gzip.NewReader(compressedStream)
-		if err != nil {
-			continue // Silently assume the layer is not gzip-compressed
-		}
-		tempDest, err := os.CreateTemp(dir, "decompressing")
-		require.NoError(t, err)
-		digester := digest.Canonical.Digester()
-		uncompressedSize, err := io.Copy(tempDest, io.TeeReader(uncompressedStream, digester.Hash()))
-		require.NoError(t, err)
-		err = uncompressedStream.Close()
-		require.NoError(t, err)
-		uncompressedDigest := digester.Digest()
-		uncompressedPath := filepath.Join(dir, uncompressedDigest.Encoded())
-		err = os.Rename(tempDest.Name(), uncompressedPath)
-		require.NoError(t, err)
-		err = os.Remove(compressedPath)
-		require.NoError(t, err)
-
-		rawLayer["digest"] = uncompressedDigest.String()
-		rawLayer["size"] = uncompressedSize
-		var mimeType string
-		getRawMapField(t, rawLayer, "mediaType", &mimeType)
-		if uncompressedMIMEType, ok := strings.CutSuffix(mimeType, ".gzip"); ok {
-			rawLayer["mediaType"] = uncompressedMIMEType
-		}
-
-		rawLayers[i] = rawLayer
+		m, err := ioutil.ReadFile(filepath.Join(dir, "manifest.json"))
+		c.Assert(err, check.IsNil)
+		c.Logf("manifest %d after: %s", i+1, string(m))
+	}
+	if regexp != "" {
+		c.Assert(string(out), check.Matches, "(?s)"+regexp) // (?s) : '.' will also match newlines
 	}
-	rawManifest["layers"] = rawLayers
-
-	manifestBlob, err = json.Marshal(rawManifest)
-	require.NoError(t, err)
-	err = os.WriteFile(filepath.Join(dir, "manifest.json"), manifestBlob, 0o600)
-	require.NoError(t, err)
 }
 
 // Verify manifest in a dir: image at dir is expectedMIMEType.
-func verifyManifestMIMEType(t *testing.T, dir string, expectedMIMEType string) {
-	manifestBlob, err := os.ReadFile(filepath.Join(dir, "manifest.json"))
-	require.NoError(t, err)
+func verifyManifestMIMEType(c *check.C, dir string, expectedMIMEType string) {
+	manifestBlob, err := ioutil.ReadFile(filepath.Join(dir, "manifest.json"))
+	c.Assert(err, check.IsNil)
 	mimeType := manifest.GuessMIMEType(manifestBlob)
-	assert.Equal(t, expectedMIMEType, mimeType)
+	c.Assert(mimeType, check.Equals, expectedMIMEType)
 }

rpm/skopeo.spec

@@ -1,167 +0,0 @@
-%global with_debug 1
-
-%if 0%{?with_debug}
-%global _find_debuginfo_dwz_opts %{nil}
-%global _dwz_low_mem_die_limit 0
-%else
-%global debug_package %{nil}
-%endif
-
-# RHEL's default %%gobuild macro doesn't account for the BUILDTAGS variable, so we
-# set it separately here and do not depend on RHEL's go-[s]rpm-macros package
-# until that's fixed.
-# c9s bz: https://bugzilla.redhat.com/show_bug.cgi?id=2227328
-# c8s bz: https://bugzilla.redhat.com/show_bug.cgi?id=2227331
-%if %{defined rhel}
-%define gobuild(o:) go build -buildmode pie -compiler gc -tags="rpm_crashtraceback libtrust_openssl ${BUILDTAGS:-}" -ldflags "-linkmode=external -compressdwarf=false ${LDFLAGS:-} -B 0x$(head -c20 /dev/urandom|od -An -tx1|tr -d ' \\n') -extldflags '%__global_ldflags'" -a -v -x %{?**};
-%endif
-
-%global gomodulesmode GO111MODULE=on
-
-# No btrfs on RHEL
-%if %{defined fedora}
-%define build_with_btrfs 1
-%endif
-
-# Only used in official koji builds
-# Copr builds set a separate epoch for all environments
-%if %{defined fedora}
-%define conditional_epoch 1
-%else
-%define conditional_epoch 2
-%endif
-
-Name: skopeo
-%if %{defined copr_username}
-Epoch: 102
-%else
-Epoch: %{conditional_epoch}
-%endif
-# DO NOT TOUCH the Version string!
-# The TRUE source of this specfile is:
-# https://github.com/containers/skopeo/blob/main/rpm/skopeo.spec
-# If that's what you're reading, Version must be 0, and will be updated by Packit for
-# copr and koji builds.
-# If you're reading this on dist-git, the version is automatically filled in by Packit.
-Version: 0
-# The `AND` needs to be uppercase in the License for SPDX compatibility
-License: Apache-2.0 AND BSD-2-Clause AND BSD-3-Clause AND ISC AND MIT AND MPL-2.0
-Release: %autorelease
-%if %{defined golang_arches_future}
-ExclusiveArch: %{golang_arches_future}
-%else
-ExclusiveArch: aarch64 ppc64le s390x x86_64
-%endif
-Summary: Inspect container images and repositories on registries
-URL: https://github.com/containers/%{name}
-# Tarball fetched from upstream
-Source0: %{url}/archive/v%{version}.tar.gz
-BuildRequires: %{_bindir}/go-md2man
-%if %{defined build_with_btrfs}
-BuildRequires: btrfs-progs-devel
-%endif
-BuildRequires: git-core
-BuildRequires: golang
-%if !%{defined gobuild}
-BuildRequires: go-rpm-macros
-%endif
-BuildRequires: gpgme-devel
-BuildRequires: libassuan-devel
-BuildRequires: ostree-devel
-BuildRequires: glib2-devel
-BuildRequires: make
-BuildRequires: shadow-utils-subid-devel
-Requires: containers-common >= 4:1-21
-
-%description
-Command line utility to inspect images and repositories directly on Docker
-registries without the need to pull them
-
-%package tests
-Summary: Tests for %{name}
-
-Requires: %{name} = %{epoch}:%{version}-%{release}
-%if %{defined fedora}
-Requires: bats
-Requires: fakeroot
-%endif
-Requires: gnupg
-Requires: jq
-Requires: golang
-Requires: podman
-Requires: crun
-Requires: httpd-tools
-Requires: openssl
-Requires: squashfs-tools
-
-%description tests
-%{summary}
-
-This package contains system tests for %{name}
-
-%prep
-%autosetup -Sgit %{name}-%{version}
-# The %%install stage should not rebuild anything but only install what's
-# built in the %%build stage. So, remove any dependency on build targets.
-sed -i 's/^install-binary: bin\/%{name}.*/install-binary:/' Makefile
-sed -i 's/^completions: bin\/%{name}.*/completions:/' Makefile
-sed -i 's/^install-docs: docs.*/install-docs:/' Makefile
-
-%build
-%set_build_flags
-export CGO_CFLAGS=$CFLAGS
-
-# These extra flags present in $CFLAGS have been skipped for now as they break the build
-CGO_CFLAGS=$(echo $CGO_CFLAGS | sed 's/-flto=auto//g')
-CGO_CFLAGS=$(echo $CGO_CFLAGS | sed 's/-Wp,D_GLIBCXX_ASSERTIONS//g')
-CGO_CFLAGS=$(echo $CGO_CFLAGS | sed 's/-specs=\/usr\/lib\/rpm\/redhat\/redhat-annobin-cc1//g')
-
-%ifarch x86_64
-export CGO_CFLAGS="$CGO_CFLAGS -m64 -mtune=generic -fcf-protection=full"
-%endif
-
-BASEBUILDTAGS="$(hack/libsubid_tag.sh)"
-%if %{defined build_with_btrfs}
-export BUILDTAGS="$BASEBUILDTAGS $(hack/btrfs_tag.sh) $(hack/btrfs_installed_tag.sh)"
-%else
-export BUILDTAGS="$BASEBUILDTAGS btrfs_noversion exclude_graphdriver_btrfs"
-%endif
-
-# unset LDFLAGS earlier set from set_build_flags
-LDFLAGS=''
-
-%gobuild -o bin/%{name} ./cmd/%{name}
-%{__make} docs
-
-%install
-make \
-    DESTDIR=%{buildroot} \
-    PREFIX=%{_prefix} \
-    install-binary install-docs install-completions
-
-# system tests
-install -d -p %{buildroot}/%{_datadir}/%{name}/test/system
-cp -pav systemtest/* %{buildroot}/%{_datadir}/%{name}/test/system/
-
-#define license tag if not already defined
-%{!?_licensedir:%global license %doc}
-
-%files
-%license LICENSE
-%doc README.md
-%{_bindir}/%{name}
-%{_mandir}/man1/%{name}*
-%dir %{_datadir}/bash-completion
-%dir %{_datadir}/bash-completion/completions
-%{_datadir}/bash-completion/completions/%{name}
-%dir %{_datadir}/fish/vendor_completions.d
-%{_datadir}/fish/vendor_completions.d/%{name}.fish
-%dir %{_datadir}/zsh/site-functions
-%{_datadir}/zsh/site-functions/_%{name}
-
-%files tests
-%license LICENSE vendor/modules.txt
-%{_datadir}/%{name}/test
-
-%changelog
-%autochangelog

systemtest/010-inspect.bats

@@ -32,11 +32,10 @@ load helpers
     config_digest=$(jq -r '.config.digest' <<<"$inspect_local_raw")
 
     # Each SHA-named layer file (but not the config) must be listed in the output of 'inspect'.
-    # In all existing versions of Skopeo (with 1.6 being the current as of this comment),
-    # the output of 'inspect' lists layer digests,
+    # As of Skopeo 1.6, (skopeo inspect)'s output lists layer digests,
     # but not the digest of the config blob ($config_digest), if any.
     layers=$(jq -r '.Layers' <<<"$inspect_local")
-    for sha in $(find $workdir -type f | xargs -l1 basename | grep -E '^[0-9a-f]{64}$'); do
+    for sha in $(find $workdir -type f | xargs -l1 basename | egrep '^[0-9a-f]{64}$'); do
         if [ "sha256:$sha" != "$config_digest" ]; then
             expect_output --from="$layers" --substring "sha256:$sha" \
                         "Locally-extracted SHA file is present in 'inspect'"
@@ -95,15 +94,14 @@ END_EXPECT
     # is created by the make-noarch-manifest script in this directory.
     img=docker://quay.io/libpod/notmyarch:20210121
 
-    # Get our host golang arch (what we're running on, according to golang).
-    # This assumes that skopeo arch matches host arch (which it always should).
-    # Buildah is used here because it depends less on the exact system config
-    # than podman - and all we're really after is the golang-flavored arch name.
-    arch=$(go env GOARCH)
+    # Get our host arch (what we're running on). This assumes that skopeo
+    # arch matches podman; it also assumes running podman >= April 2020
+    # (prior to that, the format keys were lower-case).
+    arch=$(podman info --format '{{.Host.Arch}}')
 
     # By default, 'inspect' tries to match our host os+arch. This should fail.
     run_skopeo 1 inspect $img
-    expect_output --substring "parsing manifest for image: choosing image instance: no image found in manifest list for architecture \\\\\"$arch\\\\\", variant " \
+    expect_output --substring "parsing manifest for image: choosing image instance: no image found in manifest list for architecture $arch, variant " \
                   "skopeo inspect, without --raw, fails"
 
     # With --raw, we can inspect
@@ -129,11 +127,4 @@ END_EXPECT
     expect_output --from="$repo_tags" "" "inspect --no-tags was expected to return empty RepoTags[]"
 }
 
-@test "inspect: image unknown" {
-    # non existing image
-    run_skopeo 2 inspect containers-storage:non-existing-tag
-    expect_output --substring "identifier is not an image" \
-		  "skopeo inspect containers-storage:010101010101"
-}
-
 # vim: filetype=sh

systemtest/020-copy.bats

@@ -50,7 +50,7 @@ function setup() {
 
     local dir=$TESTDIR/dir
 
-    run_skopeo copy --dest-compress-format=zstd $remote_image oci:$dir:latest
+    run_skopeo copy --dest-compress --dest-compress-format=zstd $remote_image oci:$dir:latest
 
     # zstd magic number
     local magic=$(printf "\x28\xb5\x2f\xfd")