Merge pull request #1990 from cevich/release_1.4_disable_ci

[release-1.4] Cirrus: Disable CI: RHEL 8.5 is EOL

.cirrus.yml

@@ -1,246 +0,0 @@
----
-
-# Main collection of env. vars to set for all tasks and scripts.
-env:
-    ####
-    #### Global variables used for all tasks
-    ####
-    # Name of the ultimate destination branch for this CI run, PR or post-merge.
-    DEST_BRANCH: "main"
-    # Overrides default location (/tmp/cirrus) for repo clone
-    GOPATH: &gopath "/var/tmp/go"
-    GOBIN: "${GOPATH}/bin"
-    GOCACHE: "${GOPATH}/cache"
-    GOSRC: &gosrc "/var/tmp/go/src/github.com/containers/skopeo"
-    # Required for consistency with containers/image CI
-    SKOPEO_PATH: *gosrc
-    CIRRUS_WORKING_DIR: *gosrc
-    # The default is 'sh' if unspecified
-    CIRRUS_SHELL: "/bin/bash"
-    # Save a little typing (path relative to $CIRRUS_WORKING_DIR)
-    SCRIPT_BASE: "./contrib/cirrus"
-
-    # Google-cloud VM Images
-    IMAGE_SUFFIX: "c20240102t155643z-f39f38d13"
-    FEDORA_CACHE_IMAGE_NAME: "fedora-${IMAGE_SUFFIX}"
-
-    # Container FQIN's
-    FEDORA_CONTAINER_FQIN: "quay.io/libpod/fedora_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}"
-
-
-# Default timeout for each task
-timeout_in: 45m
-
-
-gcp_credentials: ENCRYPTED[52d9e807b531b37ab14e958cb5a72499460663f04c8d73e22ad608c027a31118420f1c80f0be0882fbdf96f49d8f9ac0]
-
-
-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 $CIRRUS_PR != ''
-    container:
-        image: '${SKOPEO_CIDEV_CONTAINER_FQIN}'
-        cpu: 4
-        memory: 8
-    setup_script: |
-        make tools
-    test_script: |
-        make validate-local
-        make vendor && hack/tree_status.sh
-
-doccheck_task:
-    only_if: *is_pr
-    depends_on:
-      - validate
-    container:
-        image: "${FEDORA_CONTAINER_FQIN}"
-        cpu: 4
-        memory: 8
-    env:
-        BUILDTAGS: &withopengpg 'btrfs_noversion libdm_no_deferred_remove containers_image_openpgp'
-    script: |
-      # TODO: Can't use 'runner.sh setup' inside container.  However,
-      # removing the pre-installed package is the only necessary step
-      # at the time of this comment.
-      dnf erase -y skopeo  # Guarantee non-interference
-      "${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 ) &&
-        $CIRRUS_CHANGE_TITLE !=~ '.*CI:DOCS.*'
-    depends_on:
-        - validate
-    macos_instance:
-        image: ghcr.io/cirruslabs/macos-ventura-base:latest
-    setup_script: |
-        export PATH=$GOPATH/bin:$PATH
-        brew update
-        brew install gpgme go go-md2man
-        make tools
-    test_script: |
-        export PATH=$GOPATH/bin:$PATH
-        go version
-        go env
-        make validate-local test-unit-local bin/skopeo
-        sudo make install
-        /usr/local/bin/skopeo -v
-
-
-cross_task:
-    alias: cross
-    only_if: >-
-        $CIRRUS_CHANGE_TITLE !=~ '.*CI:DOCS.*'
-    depends_on:
-        - validate
-    gce_instance: &standardvm
-        image_project: libpod-218412
-        zone: "us-central1-f"
-        cpu: 2
-        memory: "4Gb"
-        # Required to be 200gig, do not modify - has i/o performance impact
-        # according to gcloud CLI tool warning messages.
-        disk: 200
-        image_name: ${FEDORA_CACHE_IMAGE_NAME}
-    env:
-        BUILDTAGS: *withopengpg
-    setup_script: >-
-        "${GOSRC}/${SCRIPT_BASE}/runner.sh" setup
-    cross_script: >-
-        "${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: 2
-    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
-##### prior to being manually duplicated and maintained in containers/image.
-#####
-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.*'
-    depends_on:
-        - validate
-    gce_instance:
-        image_project: libpod-218412
-        zone: "us-central1-f"
-        cpu: 2
-        memory: "4Gb"
-        # Required to be 200gig, do not modify - has i/o performance impact
-        # according to gcloud CLI tool warning messages.
-        disk: 200
-        image_name: ${FEDORA_CACHE_IMAGE_NAME}
-    matrix:
-        - name: "Skopeo Test"  # N/B: Name ref. by hack/get_fqin.sh
-          env:
-              BUILDTAGS: 'btrfs_noversion libdm_no_deferred_remove'
-        - name: "Skopeo Test w/ opengpg"
-          env:
-              BUILDTAGS: *withopengpg
-    setup_script: >-
-        "${GOSRC}/${SCRIPT_BASE}/runner.sh" setup
-    vendor_script: >-
-        "${SKOPEO_PATH}/${SCRIPT_BASE}/runner.sh" vendor
-    build_script: >-
-        "${SKOPEO_PATH}/${SCRIPT_BASE}/runner.sh" build
-    unit_script: >-
-        "${SKOPEO_PATH}/${SCRIPT_BASE}/runner.sh" unit
-    integration_script: >-
-        "${SKOPEO_PATH}/${SCRIPT_BASE}/runner.sh" integration
-    system_script: >
-        "${SKOPEO_PATH}/${SCRIPT_BASE}/runner.sh" system
-
-
-# This task is critical.  It updates the "last-used by" timestamp stored
-# in metadata for all VM images.  This mechanism functions in tandem with
-# an out-of-band pruning operation to remove disused VM images.
-meta_task:
-    name: "VM img. keepalive"
-    alias: meta
-    container: &smallcontainer
-        cpu: 2
-        memory: 2
-        image: quay.io/libpod/imgts:latest
-    env:
-        # Space-separated list of images used by this repository state
-        IMGNAMES: |
-            ${FEDORA_CACHE_IMAGE_NAME}
-            build-push-${IMAGE_SUFFIX}
-        BUILDID: "${CIRRUS_BUILD_ID}"
-        REPOREF: "${CIRRUS_REPO_NAME}"
-        GCPJSON: ENCRYPTED[6867b5a83e960e7c159a98fe6c8360064567a071c6f4b5e7d532283ecd870aa65c94ccd74bdaa9bf7aadac9d42e20a67]
-        GCPNAME: ENCRYPTED[1cf558ae125e3c39ec401e443ad76452b25d790c45eb73d77c83eb059a0f7fd5085ef7e2f7e410b04ea6e83b0aab2eb1]
-        GCPPROJECT: libpod-218412
-    clone_script: &noop mkdir -p "$CIRRUS_WORKING_DIR"
-    script: /usr/local/bin/entrypoint.sh
-
-
-# Status aggregator for all tests.  This task simply ensures a defined
-# set of tasks all passed, and allows confirming that based on the status
-# of this task.
-success_task:
-    name: "Total Success"
-    alias: success
-    # N/B: ALL tasks must be listed here, minus their '_task' suffix.
-    depends_on:
-        - validate
-        - doccheck
-        - osx
-        - cross
-        - proxy_ostree_ext
-        - test_skopeo
-        - meta
-    container: *smallcontainer
-    env:
-        CTR_FQIN: ${FEDORA_CONTAINER_FQIN}
-        TEST_ENVIRON: container
-    clone_script: *noop
-    script: /bin/true

.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

@@ -1,20 +0,0 @@
----
-
-# See also:
-# https://github.com/containers/podman/blob/main/.github/workflows/check_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:  '03 03 * * 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_failures:
-    uses: containers/podman/.github/workflows/check_cirrus_cron.yml@main
-    secrets: inherit

.github/workflows/discussion_lock.yml

@@ -1,20 +0,0 @@
----
-
-# See also:
-# https://github.com/containers/podman/blob/main/.github/workflows/discussion_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/discussion_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

@@ -1,59 +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.
-
-specfile_path: rpm/skopeo.spec
-upstream_tag_template: v{version}
-
-srpm_build_deps:
-  - make
-
-jobs:
-  - job: copr_build
-    trigger: pull_request
-    notifications:
-      failure_comment:
-        message: "Ephemeral COPR build failed. @containers/packit-build please check."
-    enable_net: true
-    targets:
-      - fedora-all-x86_64
-      - fedora-all-aarch64
-      - fedora-eln-x86_64
-      - fedora-eln-aarch64
-      - centos-stream+epel-next-8-x86_64
-      - centos-stream+epel-next-8-aarch64
-      - centos-stream+epel-next-9-x86_64
-      - centos-stream+epel-next-9-aarch64
-    additional_repos:
-      - "copr://rhcontainerbot/podman-next"
-
-  # Run on commit to main branch
-  - job: copr_build
-    trigger: commit
-    notifications:
-      failure_comment:
-        message: "podman-next COPR build failed. @containers/packit-build please check."
-    branch: main
-    owner: rhcontainerbot
-    project: podman-next
-    enable_net: true
-
-  - job: propose_downstream
-    trigger: release
-    update_release: false
-    dist_git_branches:
-      - fedora-all
-
-  - job: koji_build
-    trigger: commit
-    dist_git_branches:
-      - fedora-all
-
-  - job: bodhi_update
-    trigger: commit
-    dist_git_branches:
-      - fedora-branched # rawhide updates are created automatically

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

Dockerfile

@@ -0,0 +1,56 @@
+FROM registry.fedoraproject.org/fedora:latest
+
+RUN dnf -y update && dnf install -y make git golang golang-github-cpuguy83-md2man \
+	# storage deps
+	btrfs-progs-devel \
+	device-mapper-devel \
+	# gpgme bindings deps
+	libassuan-devel gpgme-devel \
+	gnupg \
+	# htpasswd for system tests
+	httpd-tools \
+	# OpenShift deps
+	which tar wget hostname util-linux bsdtar socat ethtool device-mapper iptables tree findutils nmap-ncat e2fsprogs xfsprogs lsof docker iproute \
+        bats jq podman runc \
+	golint \
+	openssl \
+	&& dnf clean all
+
+# Install two versions of the registry. The first is an older version that
+# only supports schema1 manifests. The second is a newer version that supports
+# both. This allows integration-cli tests to cover push/pull with both schema1
+# and schema2 manifests.
+RUN set -x \
+	&& export GO111MODULE=off \
+	&& REGISTRY_COMMIT_SCHEMA1=ec87e9b6971d831f0eff752ddb54fb64693e51cd \
+	&& REGISTRY_COMMIT=47a064d4195a9b56133891bbb13620c3ac83a827 \
+	&& export GOPATH="$(mktemp -d)" \
+	&& git clone https://github.com/docker/distribution.git "$GOPATH/src/github.com/docker/distribution" \
+	&& (cd "$GOPATH/src/github.com/docker/distribution" && git checkout -q "$REGISTRY_COMMIT") \
+	&& GOPATH="$GOPATH/src/github.com/docker/distribution/Godeps/_workspace:$GOPATH" \
+		go build -o /usr/local/bin/registry-v2 github.com/docker/distribution/cmd/registry \
+	&& (cd "$GOPATH/src/github.com/docker/distribution" && git checkout -q "$REGISTRY_COMMIT_SCHEMA1") \
+	&& GOPATH="$GOPATH/src/github.com/docker/distribution/Godeps/_workspace:$GOPATH" \
+		go build -o /usr/local/bin/registry-v2-schema1 github.com/docker/distribution/cmd/registry \
+	&& rm -rf "$GOPATH"
+
+RUN set -x \
+	&& export GO111MODULE=off \
+	&& export GOPATH=$(mktemp -d) \
+	&& git clone --depth 1 -b v1.5.0-alpha.3 git://github.com/openshift/origin "$GOPATH/src/github.com/openshift/origin" \
+	# The sed edits out a "go < 1.5" check which works incorrectly with go ≥ 1.10. \
+	&& sed -i -e 's/\[\[ "\${go_version\[2]}" < "go1.5" ]]/false/' "$GOPATH/src/github.com/openshift/origin/hack/common.sh" \
+	&& (cd "$GOPATH/src/github.com/openshift/origin" && make clean build && make all WHAT=cmd/dockerregistry) \
+	&& cp -a "$GOPATH/src/github.com/openshift/origin/_output/local/bin/linux"/*/* /usr/local/bin \
+	&& cp "$GOPATH/src/github.com/openshift/origin/images/dockerregistry/config.yml" /atomic-registry-config.yml \
+	&& rm -rf "$GOPATH" \
+	&& mkdir /registry
+
+ENV GOPATH /usr/share/gocode:/go
+ENV PATH $GOPATH/bin:/usr/share/gocode/bin:$PATH
+ENV container_magic 85531765-346b-4316-bdb8-358e4cca9e5d
+RUN go version
+WORKDIR /go/src/github.com/containers/skopeo
+COPY . /go/src/github.com/containers/skopeo
+
+#ENTRYPOINT ["hack/dind"]

Dockerfile.build

@@ -0,0 +1,12 @@
+FROM registry.fedoraproject.org/fedora:33
+
+RUN dnf update -y && \
+        dnf install -y \
+        btrfs-progs-devel \
+        device-mapper-devel \
+        golang \
+        gpgme-devel \
+        make
+
+ENV GOPATH=/
+WORKDIR /src/github.com/containers/skopeo

Makefile

@@ -1,47 +1,47 @@
-.PHONY: all binary docs docs-in-container build-local clean install install-binary install-completions shell test-integration .install.vndr vendor vendor-in-container
+.PHONY: all binary build-container docs docs-in-container build-local clean install install-binary install-completions shell test-integration .install.vndr vendor vendor-in-container
 
 export GOPROXY=https://proxy.golang.org
 
+# On some plaforms (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 := 1.56.2
-
 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)
+# Required for integration-tests to detect they are running inside a specific
+# container image.  Env. var defined in image, make does not automatically
+# pass to children unless explicitly exported
+export container_magic
+CONTAINER_RUNTIME := $(shell command -v podman 2> /dev/null || echo docker)
+GOMD2MAN ?= $(shell command -v go-md2man || echo '$(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 ($(DEBUG), 1)
   override GOGCFLAGS += -N -l
@@ -53,25 +53,10 @@ ifeq ($(GOOS), linux)
   endif
 endif
 
-# If $TESTFLAGS is set, it is passed as extra arguments to 'go test'.
-# You can select certain tests to run, with `-run <regex>` for example:
-#
-#     make test-unit TESTFLAGS='-run ^TestManifestDigest$'
-#     make test-integration TESTFLAGS='-run copySuite.TestCopy.*'
-export TESTFLAGS ?= -timeout=15m
-
-# This is assumed to be set non-empty when operating inside a CI/automation environment
-CI ?=
-
-# This env. var. is interpreted by some tests as a permission to
-# modify local configuration files and services.
-export SKOPEO_CONTAINER_TESTS ?= $(if $(CI),1,0)
-
-# This is a compromise, we either use a container for this or require
-# the local user to have a compatible python3 development environment.
-# Define it as a "resolve on use" variable to avoid calling out when possible
-SKOPEO_CIDEV_CONTAINER_FQIN ?= $(shell hack/get_fqin.sh)
-CONTAINER_CMD ?= ${CONTAINER_RUNTIME} run --rm -i -e TESTFLAGS="$(TESTFLAGS)" -e CI=$(CI) -e SKOPEO_CONTAINER_TESTS=1
+GIT_BRANCH := $(shell git rev-parse --abbrev-ref HEAD 2>/dev/null)
+IMAGE := skopeo-dev$(if $(GIT_BRANCH),:$(GIT_BRANCH))
+# set env like gobuildtag?
+CONTAINER_CMD := ${CONTAINER_RUNTIME} run --rm -i -e TESTFLAGS="$(TESTFLAGS)" #$(CONTAINER_ENVS)
 # if this session isn't interactive, then we don't want to allocate a
 # TTY, which would fail, but if it is interactive, we do want to attach
 # so that the user can send e.g. ^C through.
@@ -79,10 +64,9 @@ INTERACTIVE := $(shell [ -t 0 ] && echo 1 || echo 0)
 ifeq ($(INTERACTIVE), 1)
 	CONTAINER_CMD += -t
 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)
+CONTAINER_RUN := $(CONTAINER_CMD) "$(IMAGE)"
 
-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)'
@@ -92,8 +76,7 @@ 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) $(LIBDM_BUILD_TAG) $(LIBSUBID_BUILD_TAG)
+LOCAL_BUILD_TAGS = $(BTRFS_BUILD_TAG) $(LIBDM_BUILD_TAG)
 BUILDTAGS += $(LOCAL_BUILD_TAGS)
 
 ifeq ($(DISABLE_CGO), 1)
@@ -106,9 +89,6 @@ endif
 #           use source debugging tools like delve.
 all: bin/skopeo docs
 
-codespell:
-	codespell -S Makefile,build,buildah,buildah.spec,imgtype,copy,AUTHORS,bin,vendor,.git,go.sum,CHANGELOG.md,changelog.txt,seccomp.json,.cirrus.yml,"*.xz,*.gz,*.tar,*.tgz,*ico,*.png,*.1,*.5,*.orig,*.rej" -L fpr,uint,iff,od,ERRO -w
-
 help:
 	@echo "Usage: make <target>"
 	@echo
@@ -116,8 +96,8 @@ help:
 	@echo
 	@echo " * 'install' - Install binaries and documents to system locations"
 	@echo " * 'binary' - Build skopeo with a container"
+	@echo " * 'static' - Build statically linked binary"
 	@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"
@@ -125,18 +105,40 @@ help:
 	@echo " * 'shell' - Run the built image and attach to a shell"
 	@echo " * 'clean' - Clean artifacts"
 
-# Do the build and the output (skopeo) should appear in current dir
+# Build a container image (skopeobuild) that has everything we need to build.
+# Then do the build and the output (skopeo) should appear in current dir
 binary: cmd/skopeo
-	$(CONTAINER_RUN) make bin/skopeo $(if $(DEBUG),DEBUG=$(DEBUG)) BUILDTAGS='$(BUILDTAGS)'
+	${CONTAINER_RUNTIME} build ${BUILD_ARGS} -f Dockerfile.build -t skopeobuildimage .
+	${CONTAINER_RUNTIME} run --rm --security-opt label=disable -v $$(pwd):/src/github.com/containers/skopeo \
+		skopeobuildimage make bin/skopeo $(if $(DEBUG),DEBUG=$(DEBUG)) BUILDTAGS='$(BUILDTAGS)'
+
+# Update nix/nixpkgs.json its latest stable commit
+.PHONY: nixpkgs
+nixpkgs:
+	@nix run \
+		-f channel:nixos-21.05 nix-prefetch-git \
+		-c nix-prefetch-git \
+		--no-deepClone \
+		https://github.com/nixos/nixpkgs refs/heads/nixos-21.05 > nix/nixpkgs.json
+
+# Build statically linked binary
+.PHONY: static
+static:
+	@nix build -f nix/
+	mkdir -p ./bin
+	cp -rfp ./result/bin/* ./bin/
 
 # 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
 
+build-container:
+	${CONTAINER_RUNTIME} build ${BUILD_ARGS} -t "$(IMAGE)" .
+
 $(MANPAGES): %: %.md
 ifneq ($(DISABLE_DOCS), 1)
 	sed -e 's/\((skopeo.*\.md)\)//' -e 's/\[\(skopeo.*\)\]/\1/' $<  | $(GOMD2MAN) -in /dev/stdin -out $@
@@ -145,21 +147,15 @@ endif
 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
+	${CONTAINER_RUNTIME} build ${BUILD_ARGS} -f Dockerfile.build -t skopeobuildimage .
+	${CONTAINER_RUNTIME} run --rm --security-opt label=disable -v $$(pwd):/src/github.com/containers/skopeo \
+		skopeobuildimage make docs $(if $(DEBUG),DEBUG=$(DEBUG)) BUILDTAGS='$(BUILDTAGS)'
 
 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}
@@ -175,80 +171,60 @@ 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:
+shell: build-container
 	$(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
+# The tests can run out of entropy and block in containers, so replace /dev/random.
+test-integration: build-container
+	$(CONTAINER_RUN) bash -c 'rm -f /dev/random; ln -sf /dev/urandom /dev/random; SKOPEO_CONTAINER_TESTS=1 BUILDTAGS="$(BUILDTAGS)" $(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
+# Intended for CI, shortcut 'build-container' since already running inside container.
+test-integration-local:
+	hack/make.sh test-integration
 
 # complicated set of options needed to run podman-in-podman
-test-system:
+test-system: build-container
 	DTEMP=$(shell mktemp -d --tmpdir=/var/tmp podman-tmp.XXXXXX); \
 	$(CONTAINER_CMD) --privileged \
-		-v $(CURDIR):$(CONTAINER_GOSRC) -w $(CONTAINER_GOSRC) \
-		-v $$DTEMP:/var/lib/containers:Z -v /run/systemd/journal/socket:/run/systemd/journal/socket \
-		"$(SKOPEO_CIDEV_CONTAINER_FQIN)" \
-			$(MAKE) test-system-local; \
+	    -v $$DTEMP:/var/lib/containers:Z -v /run/systemd/journal/socket:/run/systemd/journal/socket \
+            "$(IMAGE)" \
+            bash -c 'BUILDTAGS="$(BUILDTAGS)" $(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
+# Intended for CI, shortcut 'build-container' since already running inside container.
+test-system-local:
+	hack/make.sh test-system
 
-test-unit:
+test-unit: build-container
 	# Just call (make test unit-local) here instead of worrying about environment differences
-	$(CONTAINER_RUN) $(MAKE) test-unit-local
+	$(CONTAINER_RUN) make test-unit-local BUILDTAGS='$(BUILDTAGS)'
 
-validate:
-	$(CONTAINER_RUN) $(MAKE) validate-local
+validate: build-container
+	$(CONTAINER_RUN) make validate-local
 
 # This target is only intended for development, e.g. executing it from an IDE. Use (make test) for CI or pre-release testing.
 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
+	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/\(integration\|vendor/.*\)$$')
+	$(GPGME_ENV) $(GO) test $(MOD_VENDOR) -tags "$(BUILDTAGS)" $$($(GO) list $(MOD_VENDOR) -tags "$(BUILDTAGS)" -e ./... | grep -v '^github\.com/containers/skopeo/\(integration\|vendor/.*\)$$')
 
 vendor:
 	$(GO) mod tidy
@@ -256,9 +232,4 @@ 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 `pwd`:/src -w /src docker.io/library/golang:1.16 make vendor

OWNERS

@@ -1,17 +0,0 @@
-approvers:
-  - mtrmac
-  - lsm5
-  - TomSweeneyRedHat
-  - rhatdan
-  - vrothberg
-reviewers:
-  - ashley-cui
-  - giuseppe
-  - containers/image-maintainers
-  - lsm5
-  - mtrmac
-  - QiWang19
-  - rhatdan
-  - runcom
-  - TomSweeneyRedHat
-  - vrothberg

README.md

@@ -1,4 +1,7 @@
-<img src="https://cdn.rawgit.com/containers/skopeo/main/docs/skopeo.svg" width="250" alt="Skopeo">
+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">
 
 ----
 
@@ -39,12 +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).
-
 ## 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
@@ -59,37 +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"
     ]
 }
@@ -195,6 +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
 -
 
@@ -205,7 +200,6 @@ 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.                                                               |
@@ -213,7 +207,7 @@ Please read the [contribution guide](CONTRIBUTING.md) if you want to collaborate
 | [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 - 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 registry repositories and local directories.                      |
+| [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

@@ -1,16 +0,0 @@
-package main
-
-import (
-	"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 {
-		suggestions = append(suggestions, tp+":")
-	}
-	return suggestions, cobra.ShellCompDirectiveNoFileComp
-}

cmd/skopeo/copy.go

@@ -4,17 +4,13 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"os"
+	"io/ioutil"
 	"strings"
 
-	commonFlag "github.com/containers/common/pkg/flag"
 	"github.com/containers/common/pkg/retry"
 	"github.com/containers/image/v5/copy"
 	"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"
@@ -23,27 +19,21 @@ 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
+	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
+	digestFile          string         // Write digest to this file
+	format              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
+	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 {
@@ -68,9 +58,8 @@ 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()
@@ -82,44 +71,17 @@ See skopeo(1) section "IMAGE NAMES" for the expected format
 	flags.StringSliceVar(&opts.additionalTags, "additional-tag", []string{}, "additional tags (supports docker-archive)")
 	flags.BoolVarP(&opts.quiet, "quiet", "q", false, "Suppress output information when copying images")
 	flags.BoolVarP(&opts.all, "all", "a", false, "Copy all images if SOURCE-IMAGE is a list")
-	flags.Var(commonFlag.NewOptionalStringValue(&opts.multiArch), "multi-arch", `How to handle multi-architecture images (system, all, or index-only)`)
-	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.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.VarP(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")
 	return cmd
 }
 
-// parseMultiArch parses the list processing selection
-// It returns the copy.ImageListSelection to use with image.Copy option
-func parseMultiArch(multiArch string) (copy.ImageListSelection, error) {
-	switch multiArch {
-	case "system":
-		return copy.CopySystemImage, nil
-	case "all":
-		return copy.CopyAllImages, nil
-	// There is no CopyNoImages value in copy.ImageListSelection, but because we
-	// don't provide an option to select a set of images to copy, we can use
-	// CopySpecificImages.
-	case "index-only":
-		return copy.CopySpecificImages, nil
-	// We don't expose CopySpecificImages other than index-only above, because
-	// we currently don't provide an option to choose the images to copy. That
-	// could be added in the future.
-	default:
-		return copy.CopySystemImage, fmt.Errorf("unknown multi-arch option %q. Choose one of the supported options: 'system', 'all', or 'index-only'", multiArch)
-	}
-}
-
-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")}
 	}
@@ -134,11 +96,7 @@ 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 {
@@ -159,8 +117,8 @@ func (opts *copyOptions) run(args []string, stdout io.Writer) (retErr error) {
 	}
 
 	var manifestType string
-	if opts.format.Present() {
-		manifestType, err = parseManifestFormat(opts.format.Value())
+	if opts.format.present {
+		manifestType, err = parseManifestFormat(opts.format.value)
 		if err != nil {
 			return err
 		}
@@ -184,17 +142,7 @@ func (opts *copyOptions) run(args []string, stdout io.Writer) (retErr error) {
 	if opts.quiet {
 		stdout = nil
 	}
-
 	imageListSelection := copy.CopySystemImage
-	if opts.multiArch.Present() && opts.all {
-		return fmt.Errorf("Cannot use --all and --multi-arch flags together")
-	}
-	if opts.multiArch.Present() {
-		imageListSelection, err = parseMultiArch(opts.multiArch.Value())
-		if err != nil {
-			return err
-		}
-	}
 	if opts.all {
 		imageListSelection = copy.CopyAllImages
 	}
@@ -235,71 +183,18 @@ 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)
-	}
-
-	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,
+			RemoveSignatures:      opts.removeSignatures,
+			SignBy:                opts.signByFingerprint,
+			ReportWriter:          stdout,
+			SourceCtx:             sourceCtx,
+			DestinationCtx:        destinationCtx,
+			ForceManifestMIMEType: manifestType,
+			ImageListSelection:    imageListSelection,
+			OciDecryptConfig:      decConfig,
+			OciEncryptLayers:      encLayers,
+			OciEncryptConfig:      encConfig,
 		})
 		if err != nil {
 			return err
@@ -309,7 +204,7 @@ 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/flag.go

@@ -1,4 +1,4 @@
-package flag
+package main
 
 import (
 	"strconv"
@@ -6,45 +6,31 @@ import (
 	"github.com/spf13/pflag"
 )
 
-// OptionalBool is a boolean with a separate presence flag and value.
-type OptionalBool struct {
+// optionalBool is a boolean with a separate presence flag.
+type optionalBool struct {
 	present bool
 	value   bool
 }
 
-// Present returns the bool's presence flag.
-func (ob *OptionalBool) Present() bool {
-	return ob.present
-}
-
-// Present returns the bool's value. Should only be used if Present() is true.
-func (ob *OptionalBool) Value() bool {
-	return ob.value
-}
-
 // optionalBool is a cli.Generic == flag.Value implementation equivalent to
 // the one underlying flag.Bool, except that it records whether the flag has been set.
 // This is distinct from optionalBool to (pretend to) force callers to use
 // optionalBoolFlag
-type optionalBoolValue OptionalBool
+type optionalBoolValue optionalBool
 
-// OptionalBoolFlag creates new flag for an optional in the specified flag with
-// the specified name and usage.
-func OptionalBoolFlag(fs *pflag.FlagSet, p *OptionalBool, name, usage string) *pflag.Flag {
+func optionalBoolFlag(fs *pflag.FlagSet, p *optionalBool, name, usage string) *pflag.Flag {
 	flag := fs.VarPF(internalNewOptionalBoolValue(p), name, "", usage)
 	flag.NoOptDefVal = "true"
-	flag.DefValue = "false"
 	return flag
 }
 
 // WARNING: Do not directly use this method to define optionalBool flag.
 // Caller should use optionalBoolFlag
-func internalNewOptionalBoolValue(p *OptionalBool) pflag.Value {
+func internalNewOptionalBoolValue(p *optionalBool) pflag.Value {
 	p.present = false
 	return (*optionalBoolValue)(p)
 }
 
-// Set parses the string to a bool and sets it.
 func (ob *optionalBoolValue) Set(s string) error {
 	v, err := strconv.ParseBool(s)
 	if err != nil {
@@ -55,7 +41,6 @@ func (ob *optionalBoolValue) Set(s string) error {
 	return nil
 }
 
-// String returns the string representation of the string.
 func (ob *optionalBoolValue) String() string {
 	if !ob.present {
 		return "" // This is, sadly, not round-trip safe: --flag is interpreted as --flag=true
@@ -63,52 +48,37 @@ func (ob *optionalBoolValue) String() string {
 	return strconv.FormatBool(ob.value)
 }
 
-// Type returns the type.
 func (ob *optionalBoolValue) Type() string {
 	return "bool"
 }
 
-// IsBoolFlag indicates that it's a bool flag.
 func (ob *optionalBoolValue) IsBoolFlag() bool {
 	return true
 }
 
-// OptionalString is a string with a separate presence flag.
-type OptionalString struct {
+// optionalString is a string with a separate presence flag.
+type optionalString struct {
 	present bool
 	value   string
 }
 
-// Present returns the strings's presence flag.
-func (os *OptionalString) Present() bool {
-	return os.present
-}
-
-// Present returns the string's value. Should only be used if Present() is true.
-func (os *OptionalString) Value() string {
-	return os.value
-}
-
 // optionalString is a cli.Generic == flag.Value implementation equivalent to
 // the one underlying flag.String, except that it records whether the flag has been set.
 // This is distinct from optionalString to (pretend to) force callers to use
 // newoptionalString
-type optionalStringValue OptionalString
+type optionalStringValue optionalString
 
-// NewOptionalStringValue returns a pflag.Value for the string.
-func NewOptionalStringValue(p *OptionalString) pflag.Value {
+func newOptionalStringValue(p *optionalString) pflag.Value {
 	p.present = false
 	return (*optionalStringValue)(p)
 }
 
-// Set sets the string.
 func (ob *optionalStringValue) Set(s string) error {
 	ob.value = s
 	ob.present = true
 	return nil
 }
 
-// String returns the string if present.
 func (ob *optionalStringValue) String() string {
 	if !ob.present {
 		return "" // This is, sadly, not round-trip safe: --flag= is interpreted as {present:true, value:""}
@@ -116,40 +86,27 @@ func (ob *optionalStringValue) String() string {
 	return ob.value
 }
 
-// Type returns the string type.
 func (ob *optionalStringValue) Type() string {
 	return "string"
 }
 
-// OptionalInt is a int with a separate presence flag.
-type OptionalInt struct {
+// optionalInt is a int with a separate presence flag.
+type optionalInt struct {
 	present bool
 	value   int
 }
 
-// Present returns the int's presence flag.
-func (oi *OptionalInt) Present() bool {
-	return oi.present
-}
-
-// Present returns the int's value. Should only be used if Present() is true.
-func (oi *OptionalInt) Value() int {
-	return oi.value
-}
-
 // optionalInt is a cli.Generic == flag.Value implementation equivalent to
 // the one underlying flag.Int, except that it records whether the flag has been set.
 // This is distinct from optionalInt to (pretend to) force callers to use
 // newoptionalIntValue
-type optionalIntValue OptionalInt
+type optionalIntValue optionalInt
 
-// NewOptionalIntValue returns the pflag.Value of the int.
-func NewOptionalIntValue(p *OptionalInt) pflag.Value {
+func newOptionalIntValue(p *optionalInt) pflag.Value {
 	p.present = false
 	return (*optionalIntValue)(p)
 }
 
-// Set parses the string to an int and sets it.
 func (ob *optionalIntValue) Set(s string) error {
 	v, err := strconv.ParseInt(s, 0, strconv.IntSize)
 	if err != nil {
@@ -160,15 +117,13 @@ func (ob *optionalIntValue) Set(s string) error {
 	return nil
 }
 
-// String returns the string representation of the int.
 func (ob *optionalIntValue) String() string {
 	if !ob.present {
 		return "" // If the value is not present, just return an empty string, any other value wouldn't make sense.
 	}
-	return strconv.Itoa(ob.value)
+	return strconv.Itoa(int(ob.value))
 }
 
-// Type returns the int's type.
 func (ob *optionalIntValue) Type() string {
 	return "int"
 }

cmd/skopeo/flag_test.go

@@ -0,0 +1,222 @@
+package main
+
+import (
+	"testing"
+
+	"github.com/spf13/cobra"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestOptionalBoolSet(t *testing.T) {
+	for _, c := range []struct {
+		input    string
+		accepted bool
+		value    bool
+	}{
+		// Valid inputs documented for strconv.ParseBool == flag.BoolVar
+		{"1", true, true},
+		{"t", true, true},
+		{"T", true, true},
+		{"TRUE", true, true},
+		{"true", true, true},
+		{"True", true, true},
+		{"0", true, false},
+		{"f", true, false},
+		{"F", true, false},
+		{"FALSE", true, false},
+		{"false", true, false},
+		{"False", true, false},
+		// A few invalid inputs
+		{"", false, false},
+		{"yes", false, false},
+		{"no", false, false},
+		{"2", false, false},
+	} {
+		var ob optionalBool
+		v := internalNewOptionalBoolValue(&ob)
+		require.False(t, ob.present)
+		err := v.Set(c.input)
+		if c.accepted {
+			assert.NoError(t, err, c.input)
+			assert.Equal(t, c.value, ob.value)
+		} else {
+			assert.Error(t, err, c.input)
+			assert.False(t, ob.present) // Just to be extra paranoid.
+		}
+	}
+
+	// Nothing actually explicitly says that .Set() is never called when the flag is not present on the command line;
+	// so, check that it is not being called, at least in the straightforward case (it's not possible to test that it
+	// is not called in any possible situation).
+	var globalOB, commandOB optionalBool
+	actionRun := false
+	app := &cobra.Command{
+		Use: "app",
+	}
+	optionalBoolFlag(app.PersistentFlags(), &globalOB, "global-OB", "")
+	cmd := &cobra.Command{
+		Use: "cmd",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			assert.False(t, globalOB.present)
+			assert.False(t, commandOB.present)
+			actionRun = true
+			return nil
+		},
+	}
+	optionalBoolFlag(cmd.Flags(), &commandOB, "command-OB", "")
+	app.AddCommand(cmd)
+	app.SetArgs([]string{"cmd"})
+	err := app.Execute()
+	require.NoError(t, err)
+	assert.True(t, actionRun)
+}
+
+func TestOptionalBoolString(t *testing.T) {
+	for _, c := range []struct {
+		input    optionalBool
+		expected string
+	}{
+		{optionalBool{present: true, value: true}, "true"},
+		{optionalBool{present: true, value: false}, "false"},
+		{optionalBool{present: false, value: true}, ""},
+		{optionalBool{present: false, value: false}, ""},
+	} {
+		var ob optionalBool
+		v := internalNewOptionalBoolValue(&ob)
+		ob = c.input
+		res := v.String()
+		assert.Equal(t, c.expected, res)
+	}
+}
+
+func TestOptionalBoolIsBoolFlag(t *testing.T) {
+	// IsBoolFlag means that the argument value must either be part of the same argument, with =;
+	// if there is no =, the value is set to true.
+	// This differs form other flags, where the argument is required and may be either separated with = or supplied in the next argument.
+	for _, c := range []struct {
+		input        []string
+		expectedOB   optionalBool
+		expectedArgs []string
+	}{
+		{[]string{"1", "2"}, optionalBool{present: false}, []string{"1", "2"}},                                       // Flag not present
+		{[]string{"--OB=true", "1", "2"}, optionalBool{present: true, value: true}, []string{"1", "2"}},              // --OB=true
+		{[]string{"--OB=false", "1", "2"}, optionalBool{present: true, value: false}, []string{"1", "2"}},            // --OB=false
+		{[]string{"--OB", "true", "1", "2"}, optionalBool{present: true, value: true}, []string{"true", "1", "2"}},   // --OB true
+		{[]string{"--OB", "false", "1", "2"}, optionalBool{present: true, value: true}, []string{"false", "1", "2"}}, // --OB false
+	} {
+		var ob optionalBool
+		actionRun := false
+		app := &cobra.Command{Use: "app"}
+		cmd := &cobra.Command{
+			Use: "cmd",
+			RunE: func(cmd *cobra.Command, args []string) error {
+				assert.Equal(t, c.expectedOB, ob)
+				assert.Equal(t, c.expectedArgs, args)
+				actionRun = true
+				return nil
+			},
+		}
+		optionalBoolFlag(cmd.Flags(), &ob, "OB", "")
+		app.AddCommand(cmd)
+
+		app.SetArgs(append([]string{"cmd"}, c.input...))
+		err := app.Execute()
+		require.NoError(t, err)
+		assert.True(t, actionRun)
+	}
+}
+
+func TestOptionalStringSet(t *testing.T) {
+	// Really just a smoke test, but differentiating between not present and empty.
+	for _, c := range []string{"", "hello"} {
+		var os optionalString
+		v := newOptionalStringValue(&os)
+		require.False(t, os.present)
+		err := v.Set(c)
+		assert.NoError(t, err, c)
+		assert.Equal(t, c, os.value)
+	}
+
+	// Nothing actually explicitly says that .Set() is never called when the flag is not present on the command line;
+	// so, check that it is not being called, at least in the straightforward case (it's not possible to test that it
+	// is not called in any possible situation).
+	var globalOS, commandOS optionalString
+	actionRun := false
+	app := &cobra.Command{
+		Use: "app",
+	}
+	app.PersistentFlags().Var(newOptionalStringValue(&globalOS), "global-OS", "")
+	cmd := &cobra.Command{
+		Use: "cmd",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			assert.False(t, globalOS.present)
+			assert.False(t, commandOS.present)
+			actionRun = true
+			return nil
+		},
+	}
+	cmd.Flags().Var(newOptionalStringValue(&commandOS), "command-OS", "")
+	app.AddCommand(cmd)
+	app.SetArgs([]string{"cmd"})
+	err := app.Execute()
+	require.NoError(t, err)
+	assert.True(t, actionRun)
+}
+
+func TestOptionalStringString(t *testing.T) {
+	for _, c := range []struct {
+		input    optionalString
+		expected string
+	}{
+		{optionalString{present: true, value: "hello"}, "hello"},
+		{optionalString{present: true, value: ""}, ""},
+		{optionalString{present: false, value: "hello"}, ""},
+		{optionalString{present: false, value: ""}, ""},
+	} {
+		var os optionalString
+		v := newOptionalStringValue(&os)
+		os = c.input
+		res := v.String()
+		assert.Equal(t, c.expected, res)
+	}
+}
+
+func TestOptionalStringIsBoolFlag(t *testing.T) {
+	// NOTE: optionalStringValue does not implement IsBoolFlag!
+	// IsBoolFlag means that the argument value must either be part of the same argument, with =;
+	// if there is no =, the value is set to true.
+	// This differs form other flags, where the argument is required and may be either separated with = or supplied in the next argument.
+	for _, c := range []struct {
+		input        []string
+		expectedOS   optionalString
+		expectedArgs []string
+	}{
+		{[]string{"1", "2"}, optionalString{present: false}, []string{"1", "2"}},                                 // Flag not present
+		{[]string{"--OS=hello", "1", "2"}, optionalString{present: true, value: "hello"}, []string{"1", "2"}},    // --OS=true
+		{[]string{"--OS=", "1", "2"}, optionalString{present: true, value: ""}, []string{"1", "2"}},              // --OS=false
+		{[]string{"--OS", "hello", "1", "2"}, optionalString{present: true, value: "hello"}, []string{"1", "2"}}, // --OS true
+		{[]string{"--OS", "", "1", "2"}, optionalString{present: true, value: ""}, []string{"1", "2"}},           // --OS false
+	} {
+		var os optionalString
+		actionRun := false
+		app := &cobra.Command{
+			Use: "app",
+		}
+		cmd := &cobra.Command{
+			Use: "cmd",
+			RunE: func(cmd *cobra.Command, args []string) error {
+				assert.Equal(t, c.expectedOS, os)
+				assert.Equal(t, c.expectedArgs, args)
+				actionRun = true
+				return nil
+			},
+		}
+		cmd.Flags().Var(newOptionalStringValue(&os), "OS", "")
+		app.AddCommand(cmd)
+		app.SetArgs(append([]string{"cmd"}, c.input...))
+		err := app.Execute()
+		require.NoError(t, err)
+		assert.True(t, actionRun)
+	}
+}

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"
@@ -15,20 +17,19 @@ 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"
 )
 
 type inspectOptions struct {
-	global        *globalOptions
-	image         *imageOptions
-	retryOpts     *retry.Options
-	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
-	doNotListTags bool // Do not list all tags available in the same repository
+	global    *globalOptions
+	image     *imageOptions
+	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
 }
 
 func inspectCmd(global *globalOptions) *cobra.Command {
@@ -51,16 +52,14 @@ 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()
 	flags.BoolVar(&opts.raw, "raw", false, "output raw manifest or configuration")
 	flags.BoolVar(&opts.config, "config", false, "output configuration")
 	flags.StringVarP(&opts.format, "format", "f", "", "Format the output to a Go template")
-	flags.BoolVarP(&opts.doNotListTags, "no-tags", "n", false, "Do not list the available tags from the repository in the output")
 	flags.AddFlagSet(&sharedFlags)
 	flags.AddFlagSet(&imageFlags)
 	flags.AddFlagSet(&retryFlags)
@@ -72,6 +71,7 @@ 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 +93,30 @@ 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 +124,48 @@ 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 {
@@ -172,65 +183,50 @@ 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()
 	}
-	if !opts.doNotListTags && img.Reference().Transport() == docker.Transport {
+	if img.Reference().Transport() == docker.Transport {
 		sys, err := opts.image.newSystemContext()
 		if err != nil {
 			return err
 		}
 		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
 `,
@@ -79,15 +63,15 @@ See skopeo-list-tags(1) section "REPOSITORY NAMES" for the expected format
 // Would really love to not have this, but needed to enforce tag-less and digest-less names
 func parseDockerRepositoryReference(refString string) (types.ImageReference, error) {
 	if !strings.HasPrefix(refString, docker.Transport.Name()+"://") {
-		return nil, fmt.Errorf("docker: image reference %s does not start with %s://", refString, docker.Transport.Name())
+		return nil, errors.Errorf("docker: image reference %s does not start with %s://", refString, docker.Transport.Name())
 	}
 
-	_, dockerImageName, hasColon := strings.Cut(refString, ":")
-	if !hasColon {
-		return nil, fmt.Errorf(`Invalid image name "%s", expected colon-separated transport:reference`, refString)
+	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(dockerImageName, "//"))
+	ref, err := reference.ParseNormalizedNamed(strings.TrimPrefix(parts[1], "//"))
 	if err != nil {
 		return nil, err
 	}
@@ -106,63 +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()
@@ -181,17 +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.go

@@ -5,7 +5,6 @@ import (
 	"os"
 
 	"github.com/containers/common/pkg/auth"
-	commonFlag "github.com/containers/common/pkg/flag"
 	"github.com/containers/image/v5/types"
 	"github.com/spf13/cobra"
 )
@@ -13,7 +12,7 @@ import (
 type loginOptions struct {
 	global    *globalOptions
 	loginOpts auth.LoginOptions
-	tlsVerify commonFlag.OptionalBool
+	tlsVerify optionalBool
 }
 
 func loginCmd(global *globalOptions) *cobra.Command {
@@ -29,7 +28,7 @@ func loginCmd(global *globalOptions) *cobra.Command {
 	}
 	adjustUsage(cmd)
 	flags := cmd.Flags()
-	commonFlag.OptionalBoolFlag(flags, &opts.tlsVerify, "tls-verify", "require HTTPS and verify certificates when accessing the registry")
+	optionalBoolFlag(flags, &opts.tlsVerify, "tls-verify", "require HTTPS and verify certificates when accessing the registry")
 	flags.AddFlagSet(auth.GetLoginFlags(&opts.loginOpts))
 	return cmd
 }
@@ -41,8 +40,8 @@ func (opts *loginOptions) run(args []string, stdout io.Writer) error {
 	opts.loginOpts.Stdin = os.Stdin
 	opts.loginOpts.AcceptRepositories = true
 	sys := opts.global.newSystemContext()
-	if opts.tlsVerify.Present() {
-		sys.DockerInsecureSkipTLSVerify = types.NewOptionalBool(!opts.tlsVerify.Value())
+	if opts.tlsVerify.present {
+		sys.DockerInsecureSkipTLSVerify = types.NewOptionalBool(!opts.tlsVerify.value)
 	}
 	return auth.Login(ctx, sys, &opts.loginOpts, args)
 }

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.go

@@ -4,7 +4,6 @@ import (
 	"io"
 
 	"github.com/containers/common/pkg/auth"
-	commonFlag "github.com/containers/common/pkg/flag"
 	"github.com/containers/image/v5/types"
 	"github.com/spf13/cobra"
 )
@@ -12,7 +11,7 @@ import (
 type logoutOptions struct {
 	global     *globalOptions
 	logoutOpts auth.LogoutOptions
-	tlsVerify  commonFlag.OptionalBool
+	tlsVerify  optionalBool
 }
 
 func logoutCmd(global *globalOptions) *cobra.Command {
@@ -28,7 +27,7 @@ func logoutCmd(global *globalOptions) *cobra.Command {
 	}
 	adjustUsage(cmd)
 	flags := cmd.Flags()
-	commonFlag.OptionalBoolFlag(flags, &opts.tlsVerify, "tls-verify", "require HTTPS and verify certificates when accessing the registry")
+	optionalBoolFlag(flags, &opts.tlsVerify, "tls-verify", "require HTTPS and verify certificates when accessing the registry")
 	flags.AddFlagSet(auth.GetLogoutFlags(&opts.logoutOpts))
 	return cmd
 }
@@ -37,8 +36,8 @@ func (opts *logoutOptions) run(args []string, stdout io.Writer) error {
 	opts.logoutOpts.Stdout = stdout
 	opts.logoutOpts.AcceptRepositories = true
 	sys := opts.global.newSystemContext()
-	if opts.tlsVerify.Present() {
-		sys.DockerInsecureSkipTLSVerify = types.NewOptionalBool(!opts.tlsVerify.Value())
+	if opts.tlsVerify.present {
+		sys.DockerInsecureSkipTLSVerify = types.NewOptionalBool(!opts.tlsVerify.value)
 	}
 	return auth.Logout(sys, &opts.logoutOpts, args)
 }

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

@@ -3,10 +3,8 @@ package main
 import (
 	"context"
 	"fmt"
-	"strings"
 	"time"
 
-	commonFlag "github.com/containers/common/pkg/flag"
 	"github.com/containers/image/v5/signature"
 	"github.com/containers/image/v5/types"
 	"github.com/containers/skopeo/version"
@@ -22,32 +20,17 @@ var gitCommit = ""
 var defaultUserAgent = "skopeo/" + version.Version
 
 type globalOptions struct {
-	debug              bool                    // Enable debug output
-	tlsVerify          commonFlag.OptionalBool // Require HTTPS and verify certificates (for docker: and docker-daemon:)
-	policyPath         string                  // Path to a signature verification policy file
-	insecurePolicy     bool                    // Use an "allow everything" signature verification policy
-	registriesDirPath  string                  // Path to a "registries.d" registry configuration directory
-	overrideArch       string                  // Architecture to use for choosing images, instead of the runtime one
-	overrideOS         string                  // OS to use for choosing images, instead of the runtime one
-	overrideVariant    string                  // Architecture variant to use for choosing images, instead of the runtime one
-	commandTimeout     time.Duration           // Timeout for the command execution
-	registriesConfPath string                  // Path to the "registries.conf" file
-	tmpDir             string                  // Path to use for big temporary files
-}
-
-// requireSubcommand returns an error if no sub command is provided
-// This was copied from podman: `github.com/containers/podman/cmd/podman/validate/args.go
-// Some small style changes to match skopeo were applied, but try to apply any
-// bugfixes there first.
-func requireSubcommand(cmd *cobra.Command, args []string) error {
-	if len(args) > 0 {
-		suggestions := cmd.SuggestionsFor(args[0])
-		if len(suggestions) == 0 {
-			return fmt.Errorf("Unrecognized command `%[1]s %[2]s`\nTry '%[1]s --help' for more information", cmd.CommandPath(), args[0])
-		}
-		return fmt.Errorf("Unrecognized command `%[1]s %[2]s`\n\nDid you mean this?\n\t%[3]s\n\nTry '%[1]s --help' for more information", cmd.CommandPath(), args[0], strings.Join(suggestions, "\n\t"))
-	}
-	return fmt.Errorf("Missing command '%[1]s COMMAND'\nTry '%[1]s --help' for more information", cmd.CommandPath())
+	debug              bool          // Enable debug output
+	tlsVerify          optionalBool  // Require HTTPS and verify certificates (for docker: and docker-daemon:)
+	policyPath         string        // Path to a signature verification policy file
+	insecurePolicy     bool          // Use an "allow everything" signature verification policy
+	registriesDirPath  string        // Path to a "registries.d" registry configuration directory
+	overrideArch       string        // Architecture to use for choosing images, instead of the runtime one
+	overrideOS         string        // OS to use for choosing images, instead of the runtime one
+	overrideVariant    string        // Architecture variant to use for choosing images, instead of the runtime one
+	commandTimeout     time.Duration // Timeout for the command execution
+	registriesConfPath string        // Path to the "registries.conf" file
+	tmpDir             string        // Path to use for big temporary files
 }
 
 // createApp returns a cobra.Command, and the underlying globalOptions object, to be run or tested.
@@ -55,14 +38,18 @@ 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",
+		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;
@@ -91,18 +78,16 @@ func createApp() (*cobra.Command, *globalOptions) {
 		logrus.Fatal("unable to mark registries-conf flag as hidden")
 	}
 	rootCommand.PersistentFlags().StringVar(&opts.tmpDir, "tmpdir", "", "directory used to store temporary files")
-	flag := commonFlag.OptionalBoolFlag(rootCommand.Flags(), &opts.tlsVerify, "tls-verify", "Require HTTPS and verify certificates when accessing the registry")
+	flag := optionalBoolFlag(rootCommand.Flags(), &opts.tlsVerify, "tls-verify", "Require HTTPS and verify certificates when accessing the registry")
 	flag.Hidden = true
 	rootCommand.AddCommand(
 		copyCmd(&opts),
 		deleteCmd(&opts),
-		generateSigstoreKeyCmd(),
 		inspectCmd(&opts),
 		layersCmd(&opts),
 		loginCmd(&opts),
 		logoutCmd(&opts),
 		manifestDigestCmd(),
-		proxyCmd(&opts),
 		syncCmd(&opts),
 		standaloneSignCmd(),
 		standaloneVerifyCmd(),
@@ -113,11 +98,11 @@ 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)
 	}
-	if opts.tlsVerify.Present() {
+	if opts.tlsVerify.present {
 		logrus.Warn("'--tls-verify' is deprecated, please set this on the specific subcommand")
 	}
 	return nil
@@ -174,8 +159,8 @@ func (opts *globalOptions) newSystemContext() *types.SystemContext {
 		DockerRegistryUserAgent:  defaultUserAgent,
 	}
 	// DEPRECATED: We support this for backward compatibility, but override it if a per-image flag is provided.
-	if opts.tlsVerify.Present() {
-		ctx.DockerInsecureSkipTLSVerify = types.NewOptionalBool(!opts.tlsVerify.Value())
+	if opts.tlsVerify.present {
+		ctx.DockerInsecureSkipTLSVerify = types.NewOptionalBool(!opts.tlsVerify.value)
 	}
 	return ctx
 }

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

@@ -1,877 +0,0 @@
-//go:build !windows
-// +build !windows
-
-package main
-
-/*
-  This code is currently only intended to be used by ostree
-  to fetch content via containers.  The API is subject
-  to change.  A goal however is to stabilize the API
-  eventually as a full out-of-process interface to the
-  core containers/image library functionality.
-
-  To use this command, in a parent process create a
-  `socketpair()` of type `SOCK_SEQPACKET`.  Fork
-  off this command, and pass one half of the socket
-  pair to the child.  Providing it on stdin (fd 0)
-  is the expected default.
-
-  The protocol is JSON for the control layer,
-  and  a read side of a `pipe()` passed for large data.
-
- Base JSON protocol:
-
- request: { method: "MethodName": args: [arguments] }
- reply: { success: bool, value: JSVAL, pipeid: number, error: string }
-
- For any non-metadata i.e. payload data from `GetManifest`
- and `GetBlob` the server will pass back the read half of a `pipe(2)` via FD passing,
- along with a `pipeid` integer.
-
- The expected flow looks like this:
-
-  - Initialize
-    And validate the returned protocol version versus
-	what your client supports.
-  - OpenImage docker://quay.io/someorg/example:latest
-    (returns an imageid)
-  - GetManifest imageid (and associated <pipeid>)
-  (Streaming read data from pipe)
-  - FinishPipe <pipeid>
-  - GetBlob imageid sha256:...
-  (Streaming read data from pipe)
-  - FinishPipe <pipeid>
-  - GetBlob imageid sha256:...
-  (Streaming read data from pipe)
-  - FinishPipe <pipeid>
-  - CloseImage imageid
-
- You may interleave invocations of these methods, e.g. one
- can also invoke `OpenImage` multiple times, as well as
- starting multiple GetBlob requests before calling `FinishPipe`
- on them.  The server will stream data into the pipefd
- until `FinishPipe` is invoked.
-
- Note that the pipe will not be closed by the server until
- the client has invoked `FinishPipe`.  This is to ensure
- that the client checks for errors.  For example, `GetBlob`
- performs digest (e.g. sha256) verification and this must
- be checked after all data has been written.
-*/
-
-import (
-	"bytes"
-	"context"
-	"encoding/json"
-	"errors"
-	"fmt"
-	"io"
-	"net"
-	"os"
-	"sync"
-	"syscall"
-
-	"github.com/containers/image/v5/image"
-	"github.com/containers/image/v5/manifest"
-	ocilayout "github.com/containers/image/v5/oci/layout"
-	"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"
-	dockerdistributionerrcode "github.com/docker/distribution/registry/api/errcode"
-	dockerdistributionapi "github.com/docker/distribution/registry/api/v2"
-	"github.com/opencontainers/go-digest"
-	imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
-	"github.com/sirupsen/logrus"
-	"github.com/spf13/cobra"
-)
-
-// protocolVersion is semantic version of the protocol used by this proxy.
-// The first version of the protocol has major version 0.2 to signify a
-// departure from the original code which used HTTP.
-//
-// 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"
-
-// maxMsgSize is the current limit on a packet size.
-// Note that all non-metadata (i.e. payload data) is sent over a pipe.
-const maxMsgSize = 32 * 1024
-
-// maxJSONFloat is ECMA Number.MAX_SAFE_INTEGER
-// 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
-
-// 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"`
-}
-
-// reply is serialized to JSON as the return value from a function call.
-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"`
-	// 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
-	Error string `json:"error"`
-}
-
-// replyBuf is our internal deserialization of reply plus optional fd
-type replyBuf struct {
-	// value will be converted to a reply Value
-	value any
-	// 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
-	pipeid uint32
-}
-
-// activePipe is an open pipe to the client.
-// It contains an error value
-type activePipe struct {
-	// w is the write half of the pipe
-	w *os.File
-	// wg is completed when our worker goroutine is done
-	wg sync.WaitGroup
-	// err may be set in our worker goroutine
-	err error
-}
-
-// openImage is an opened image reference
-type openImage struct {
-	// id is an opaque integer handle
-	id        uint64
-	src       types.ImageSource
-	cachedimg types.Image
-}
-
-// proxyHandler is the state associated with our socket.
-type proxyHandler struct {
-	// lock protects everything else in this structure.
-	lock sync.Mutex
-	// opts is CLI options
-	opts   *proxyOptions
-	sysctx *types.SystemContext
-	cache  types.BlobInfoCache
-
-	// imageSerial is a counter for open images
-	imageSerial uint64
-	// images holds our opened images
-	images map[uint64]*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) {
-	h.lock.Lock()
-	defer h.lock.Unlock()
-
-	var ret replyBuf
-
-	if len(args) != 0 {
-		return ret, fmt.Errorf("invalid request, expecting zero arguments")
-	}
-
-	if h.sysctx != nil {
-		return ret, fmt.Errorf("already initialized")
-	}
-
-	sysctx, err := h.opts.imageOpts.newSystemContext()
-	if err != nil {
-		return ret, err
-	}
-	h.sysctx = sysctx
-	h.cache = blobinfocache.DefaultCache(sysctx)
-
-	r := replyBuf{
-		value: protocolVersion,
-	}
-	return r, nil
-}
-
-// 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)
-}
-
-// 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
-}
-
-// 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, ocilayout.ImageNotFoundError{})
-}
-
-func (h *proxyHandler) openImageImpl(args []any, allowNotFound bool) (retReplyBuf replyBuf, retErr 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("invalid request, expecting one argument")
-	}
-	imageref, ok := args[0].(string)
-	if !ok {
-		return ret, fmt.Errorf("expecting string imageref, not %T", args[0])
-	}
-
-	imgRef, err := alltransports.ParseImageName(imageref)
-	if err != nil {
-		return ret, err
-	}
-	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,
-		src: imgsrc,
-	}
-	h.images[openimg.id] = openimg
-	ret.value = openimg.id
-
-	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) {
-	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("invalid request, expecting one argument")
-	}
-	imgref, err := h.parseImageFromID(args[0])
-	if err != nil {
-		return ret, err
-	}
-	imgref.src.Close()
-	delete(h.images, imgref.id)
-
-	return ret, nil
-}
-
-// parseUint64 validates that a number fits inside a JavaScript safe integer
-func parseUint64(v any) (uint64, error) {
-	f, ok := v.(float64)
-	if !ok {
-		return 0, fmt.Errorf("expecting numeric, not %T", v)
-	}
-	if f > maxJSONFloat {
-		return 0, fmt.Errorf("out of range integer for numeric %f", f)
-	}
-	return uint64(f), nil
-}
-
-func (h *proxyHandler) parseImageFromID(v any) (*openImage, error) {
-	imgid, err := parseUint64(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)
-	}
-	return imgref, nil
-}
-
-func (h *proxyHandler) allocPipe() (*os.File, *activePipe, error) {
-	piper, pipew, err := os.Pipe()
-	if err != nil {
-		return nil, nil, err
-	}
-	f := activePipe{
-		w: pipew,
-	}
-	h.activePipes[uint32(pipew.Fd())] = &f
-	f.wg.Add(1)
-	return piper, &f, nil
-}
-
-// 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) {
-	var ret replyBuf
-	piper, f, err := h.allocPipe()
-	if err != nil {
-		return ret, err
-	}
-
-	go func() {
-		// Signal completion when we return
-		defer f.wg.Done()
-		_, err = io.Copy(f.w, bytes.NewReader(buf))
-		if err != nil {
-			f.err = err
-		}
-	}()
-
-	ret.value = retval
-	ret.fd = piper
-	ret.pipeid = uint32(f.w.Fd())
-	return ret, nil
-}
-
-// cacheTargetManifest is invoked when GetManifest or GetConfig is invoked
-// the first time for a given image.  If the requested image is a manifest
-// list, this function resolves it to the image matching the calling process'
-// operating system and architecture.
-//
-// TODO: Add GetRawManifest or so that exposes manifest lists
-func (h *proxyHandler) cacheTargetManifest(img *openImage) error {
-	ctx := context.Background()
-	if img.cachedimg != nil {
-		return nil
-	}
-	unparsedToplevel := image.UnparsedInstance(img.src, nil)
-	mfest, manifestType, err := unparsedToplevel.Manifest(ctx)
-	if err != nil {
-		return err
-	}
-	var target *image.UnparsedImage
-	if manifest.MIMETypeIsMultiImage(manifestType) {
-		manifestList, err := manifest.ListFromBlob(mfest, manifestType)
-		if err != nil {
-			return err
-		}
-		instanceDigest, err := manifestList.ChooseInstance(h.sysctx)
-		if err != nil {
-			return err
-		}
-		target = image.UnparsedInstance(img.src, &instanceDigest)
-	} else {
-		target = unparsedToplevel
-	}
-	cachedimg, err := image.FromUnparsedImage(ctx, h.sysctx, target)
-	if err != nil {
-		return err
-	}
-	img.cachedimg = cachedimg
-	return nil
-}
-
-// 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) {
-	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("invalid request, expecting one argument")
-	}
-	imgref, err := h.parseImageFromID(args[0])
-	if err != nil {
-		return ret, err
-	}
-
-	err = h.cacheTargetManifest(imgref)
-	if err != nil {
-		return ret, err
-	}
-	img := imgref.cachedimg
-
-	ctx := context.Background()
-	rawManifest, manifestType, err := img.Manifest(ctx)
-	if err != nil {
-		return ret, err
-	}
-
-	// We only support OCI and docker2schema2.  We know docker2schema2 can be easily+cheaply
-	// converted into OCI, so consumers only need to see OCI.
-	switch manifestType {
-	case imgspecv1.MediaTypeImageManifest, manifest.DockerV2Schema2MediaType:
-		break
-	// Explicitly reject e.g. docker schema 1 type with a "legacy" note
-	case manifest.DockerV2Schema1MediaType, manifest.DockerV2Schema1SignedMediaType:
-		return ret, fmt.Errorf("unsupported legacy manifest MIME type: %s", manifestType)
-	default:
-		return ret, fmt.Errorf("unsupported manifest MIME type: %s", manifestType)
-	}
-
-	// We always return the original digest, as that's what clients need to do pull-by-digest
-	// and in general identify the image.
-	digest, err := manifest.Digest(rawManifest)
-	if err != nil {
-		return ret, err
-	}
-	var serialized []byte
-	// But, we convert to OCI format on the wire if it's not already.  The idea here is that by reusing the containers/image
-	// stack, clients to this proxy can pretend the world is OCI only, and not need to care about e.g.
-	// docker schema and MIME types.
-	if manifestType != imgspecv1.MediaTypeImageManifest {
-		manifestUpdates := types.ManifestUpdateOptions{ManifestMIMEType: imgspecv1.MediaTypeImageManifest}
-		ociImage, err := img.UpdatedImage(ctx, manifestUpdates)
-		if err != nil {
-			return ret, err
-		}
-
-		ociSerialized, _, err := ociImage.Manifest(ctx)
-		if err != nil {
-			return ret, err
-		}
-		serialized = ociSerialized
-	} else {
-		serialized = rawManifest
-	}
-	return h.returnBytes(digest, serialized)
-}
-
-// 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) {
-	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("invalid request, expecting: [imgid]")
-	}
-	imgref, err := h.parseImageFromID(args[0])
-	if err != nil {
-		return ret, err
-	}
-	err = h.cacheTargetManifest(imgref)
-	if err != nil {
-		return ret, err
-	}
-	img := imgref.cachedimg
-
-	ctx := context.TODO()
-	config, err := img.OCIConfig(ctx)
-	if err != nil {
-		return ret, err
-	}
-	serialized, err := json.Marshal(&config)
-	if err != nil {
-		return ret, err
-	}
-	return h.returnBytes(nil, serialized)
-}
-
-// 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) {
-	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("invalid request, expecting: [imgid]")
-	}
-	imgref, err := h.parseImageFromID(args[0])
-	if err != nil {
-		return ret, err
-	}
-	err = h.cacheTargetManifest(imgref)
-	if err != nil {
-		return ret, err
-	}
-	img := imgref.cachedimg
-
-	ctx := context.TODO()
-	config, err := img.OCIConfig(ctx)
-	if err != nil {
-		return ret, err
-	}
-	serialized, err := json.Marshal(&config.Config)
-	if err != nil {
-		return ret, err
-	}
-	return h.returnBytes(nil, serialized)
-}
-
-// GetBlob fetches a blob, performing digest verification.
-func (h *proxyHandler) GetBlob(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) != 3 {
-		return ret, fmt.Errorf("found %d args, expecting (imgid, digest, size)", len(args))
-	}
-	imgref, err := h.parseImageFromID(args[0])
-	if err != nil {
-		return ret, err
-	}
-	digestStr, ok := args[1].(string)
-	if !ok {
-		return ret, fmt.Errorf("expecting string blobid")
-	}
-	size, err := parseUint64(args[2])
-	if err != nil {
-		return ret, err
-	}
-
-	ctx := context.TODO()
-	d, err := digest.Parse(digestStr)
-	if err != nil {
-		return ret, err
-	}
-	blobr, blobSize, err := imgref.src.GetBlob(ctx, types.BlobInfo{Digest: d, Size: int64(size)}, h.cache)
-	if err != nil {
-		return ret, err
-	}
-
-	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)
-		n, err := io.Copy(f.w, tr)
-		if err != nil {
-			f.err = err
-			return
-		}
-		if n != int64(size) {
-			f.err = fmt.Errorf("expected %d bytes in blob, got %d", size, n)
-		}
-		if !verifier.Verified() {
-			f.err = fmt.Errorf("corrupted blob, expecting %s", d.String())
-		}
-	}()
-
-	ret.value = blobSize
-	ret.fd = piper
-	ret.pipeid = uint32(f.w.Fd())
-	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) {
-	h.lock.Lock()
-	defer h.lock.Unlock()
-
-	var ret replyBuf
-
-	pipeidv, err := parseUint64(args[0])
-	if err != nil {
-		return ret, err
-	}
-	pipeid := uint32(pipeidv)
-
-	f, ok := h.activePipes[pipeid]
-	if !ok {
-		return ret, fmt.Errorf("finishpipe: no active pipe %d", pipeid)
-	}
-
-	// Wait for the goroutine to complete
-	f.wg.Wait()
-	// 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
-	err = f.err
-	delete(h.activePipes, pipeid)
-	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 {
-	replyToSerialize := reply{
-		Success: err == nil,
-		Value:   buf.value,
-		PipeID:  buf.pipeid,
-	}
-	if err != nil {
-		replyToSerialize.Error = err.Error()
-	}
-	serializedReply, err := json.Marshal(&replyToSerialize)
-	if err != nil {
-		return err
-	}
-	// We took ownership of the FD - close it when we're done.
-	defer func() {
-		if buf.fd != nil {
-			buf.fd.Close()
-		}
-	}()
-	// Copy the FD number to the socket ancillary buffer
-	fds := make([]int, 0)
-	if buf.fd != nil {
-		fds = append(fds, int(buf.fd.Fd()))
-	}
-	oob := syscall.UnixRights(fds...)
-	n, oobn, err := conn.WriteMsgUnix(serializedReply, oob, nil)
-	if err != nil {
-		return err
-	}
-	// Validate that we sent the full packet
-	if n != len(serializedReply) || oobn != len(oob) {
-		return io.ErrShortWrite
-	}
-	return nil
-}
-
-type proxyOptions struct {
-	global    *globalOptions
-	imageOpts *imageOptions
-	sockFd    int
-}
-
-func proxyCmd(global *globalOptions) *cobra.Command {
-	sharedFlags, sharedOpts := sharedImageFlags()
-	imageFlags, imageOpts := imageFlags(global, sharedOpts, nil, "", "")
-	opts := proxyOptions{global: global, imageOpts: imageOpts}
-	cmd := &cobra.Command{
-		Use:   "experimental-image-proxy [command options] IMAGE",
-		Short: "Interactive proxy for fetching container images (EXPERIMENTAL)",
-		Long:  `Run skopeo as a proxy, supporting HTTP requests to fetch manifests and blobs.`,
-		RunE:  commandAction(opts.run),
-		Args:  cobra.ExactArgs(0),
-		// Not stabilized yet
-		Hidden:  true,
-		Example: `skopeo experimental-image-proxy --sockfd 3`,
-	}
-	adjustUsage(cmd)
-	flags := cmd.Flags()
-	flags.AddFlagSet(&sharedFlags)
-	flags.AddFlagSet(&imageFlags)
-	flags.IntVar(&opts.sockFd, "sockfd", 0, "Serve on opened socket pair (default 0/stdin)")
-	return cmd
-}
-
-// 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
-	}
-	// 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":
-		rb, err = h.GetManifest(req.Args)
-	case "GetConfig":
-		rb, err = h.GetConfig(req.Args)
-	case "GetFullConfig":
-		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)
-	}
-	return
-}
-
-// Implementation of podman experimental-image-proxy
-func (opts *proxyOptions) run(args []string, stdout io.Writer) error {
-	handler := &proxyHandler{
-		opts:        opts,
-		images:      make(map[uint64]*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")
-	fconn, err := net.FileConn(fd)
-	if err != nil {
-		return err
-	}
-	conn := fconn.(*net.UnixConn)
-
-	// Allocate a buffer to copy the packet into
-	buf := make([]byte, maxMsgSize)
-	for {
-		n, _, err := conn.ReadFrom(buf)
-		if err != nil {
-			if errors.Is(err, io.EOF) {
-				return nil
-			}
-			return fmt.Errorf("reading socket: %v", err)
-		}
-		readbuf := buf[0:n]
-
-		rb, terminate, err := handler.processRequest(readbuf)
-		if terminate {
-			return nil
-		}
-
-		if err := rb.send(conn, err); err != nil {
-			return fmt.Errorf("writing to socket: %w", err)
-		}
-	}
-}

cmd/skopeo/proxy_windows.go

@@ -1,30 +0,0 @@
-//go:build windows
-// +build windows
-
-package main
-
-import (
-	"fmt"
-	"io"
-
-	"github.com/spf13/cobra"
-)
-
-type proxyOptions struct {
-	global *globalOptions
-}
-
-func proxyCmd(global *globalOptions) *cobra.Command {
-	opts := proxyOptions{global: global}
-	cmd := &cobra.Command{
-		RunE: commandAction(opts.run),
-		Args: cobra.ExactArgs(0),
-		// Not stabilized yet
-		Hidden: true,
-	}
-	return cmd
-}
-
-func (opts *proxyOptions) run(args []string, stdout io.Writer) error {
-	return fmt.Errorf("This command is not supported on Windows")
-}

cmd/skopeo/signing.go

@@ -5,17 +5,14 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"os"
-	"strings"
+	"io/ioutil"
 
-	"github.com/containers/image/v5/pkg/cli"
 	"github.com/containers/image/v5/signature"
 	"github.com/spf13/cobra"
 )
 
 type standaloneSignOptions struct {
-	output         string // Output file path
-	passphraseFile string // Path pointing to a passphrase file when signing
+	output string // Output file path
 }
 
 func standaloneSignCmd() *cobra.Command {
@@ -28,7 +25,6 @@ func standaloneSignCmd() *cobra.Command {
 	adjustUsage(cmd)
 	flags := cmd.Flags()
 	flags.StringVarP(&opts.output, "output", "o", "", "output the signature to `SIGNATURE`")
-	flags.StringVarP(&opts.passphraseFile, "passphrase-file", "", "", "file that contains a passphrase for the --sign-by key")
 	return cmd
 }
 
@@ -40,49 +36,37 @@ 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()
-
-	passphrase, err := cli.ReadPassphraseFile(opts.passphraseFile)
+	signature, err := signature.SignDockerManifest(manifest, dockerReference, mech, fingerprint)
 	if err != nil {
-		return err
+		return fmt.Errorf("Error creating signature: %v", err)
 	}
 
-	signature, err := signature.SignDockerManifestWithOptions(manifest, dockerReference, mech, fingerprint, &signature.SignOptions{Passphrase: passphrase})
-	if err != nil {
-		return fmt.Errorf("Error creating signature: %w", 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 +77,29 @@ 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 +130,9 @@ 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

@@ -2,56 +2,43 @@ package main
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"io"
-	"io/fs"
+	"io/ioutil"
 	"os"
 	"path"
 	"path/filepath"
 	"regexp"
 	"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/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"
-	"golang.org/x/exp/slices"
-	"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
-	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
+	format              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
 }
 
 // repoDescriptor contains information of a single repository used as a sync source.
@@ -72,7 +59,6 @@ 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
@@ -113,18 +99,11 @@ 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.VarP(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.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)
 	flags.AddFlagSet(&deprecatedTLSVerifyFlags)
 	flags.AddFlagSet(&srcFlags)
@@ -134,12 +113,12 @@ 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
 	}
 
@@ -151,13 +130,13 @@ 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
 }
@@ -169,7 +148,7 @@ 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
 }
@@ -187,24 +166,24 @@ 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
@@ -224,8 +203,16 @@ 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
@@ -245,15 +232,11 @@ 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)
 	}
@@ -266,15 +249,15 @@ 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
@@ -284,7 +267,7 @@ 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
@@ -306,14 +289,6 @@ 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,
@@ -378,144 +353,61 @@ 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
@@ -533,7 +425,7 @@ 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{
@@ -543,7 +435,7 @@ 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 {
@@ -552,7 +444,7 @@ 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)
@@ -563,7 +455,7 @@ 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
@@ -572,7 +464,7 @@ 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)
 
@@ -582,9 +474,16 @@ 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...)
 		}
@@ -593,7 +492,7 @@ 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")}
 	}
@@ -601,35 +500,38 @@ 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
@@ -641,8 +543,8 @@ func (opts *syncOptions) run(args []string, stdout io.Writer) (retErr error) {
 	}
 
 	var manifestType string
-	if opts.format.Present() {
-		manifestType, err = parseManifestFormat(opts.format.Value())
+	if opts.format.present {
+		manifestType, err = parseManifestFormat(opts.format.value)
 		if err != nil {
 			return err
 		}
@@ -653,7 +555,7 @@ 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 {
@@ -666,62 +568,16 @@ 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")
-	}
-	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)
-	}
-
+	imagesNumber := 0
 	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,
 		OptimizeDestinationImageAlreadyExists: true,
 		ForceManifestMIMEType:                 manifestType,
 	}
-	errorsPresent := false
-	imagesNumber := 0
-	if opts.dryRun {
-		logrus.Warn("Running in dry-run mode")
-	}
 
 	for _, srcRepo := range srcRepoList {
 		options.SourceCtx = srcRepo.Context
@@ -744,44 +600,26 @@ 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 {
-					_, 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
-				}
+			}).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 {
+				return errors.Wrapf(err, "Error copying ref %q", transports.ImageName(ref))
 			}
 			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))
-	}
-	if !errorsPresent {
-		return nil
-	}
-	return errors.New("Sync failed due to previous reported error(s) for one or more images")
+	logrus.Infof("Synced %d images from %d sources", imagesNumber, len(srcRepoList))
+	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"
-
 	"github.com/containers/image/v5/transports/alltransports"
 	"github.com/containers/storage/pkg/unshare"
+	"github.com/pkg/errors"
 	"github.com/syndtr/gocapability/capability"
-	"golang.org/x/exp/slices"
 )
 
 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

@@ -2,24 +2,21 @@ package main
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"io"
 	"os"
 	"strings"
 
-	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"
 	"github.com/containers/image/v5/pkg/compression"
 	"github.com/containers/image/v5/transports/alltransports"
 	"github.com/containers/image/v5/types"
 	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.
@@ -27,27 +24,6 @@ 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,
@@ -56,9 +32,8 @@ 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
 	}
@@ -70,7 +45,7 @@ func commandAction(handler func(args []string, stdout io.Writer) error) func(cmd
 // whether or not the value actually ends up being used.
 // DO NOT ADD ANY NEW USES OF THIS; just call dockerImageFlags with an appropriate, possibly empty, flagPrefix.
 type deprecatedTLSVerifyOption struct {
-	tlsVerify commonFlag.OptionalBool // FIXME FIXME: Warn if this is used, or even if it is ignored.
+	tlsVerify optionalBool // FIXME FIXME: Warn if this is used, or even if it is ignored.
 }
 
 // warnIfUsed warns if tlsVerify was set by the user, and suggests alternatives (which should
@@ -78,7 +53,7 @@ type deprecatedTLSVerifyOption struct {
 // Every user should call this as part of handling the CLI, whether or not the value actually
 // ends up being used.
 func (opts *deprecatedTLSVerifyOption) warnIfUsed(alternatives []string) {
-	if opts.tlsVerify.Present() {
+	if opts.tlsVerify.present {
 		logrus.Warnf("'--tls-verify' is deprecated, instead use: %s", strings.Join(alternatives, ", "))
 	}
 }
@@ -88,7 +63,7 @@ func (opts *deprecatedTLSVerifyOption) warnIfUsed(alternatives []string) {
 func deprecatedTLSVerifyFlags() (pflag.FlagSet, *deprecatedTLSVerifyOption) {
 	opts := deprecatedTLSVerifyOption{}
 	fs := pflag.FlagSet{}
-	flag := commonFlag.OptionalBoolFlag(&fs, &opts.tlsVerify, "tls-verify", "require HTTPS and verify certificates when accessing the container registry")
+	flag := optionalBoolFlag(&fs, &opts.tlsVerify, "tls-verify", "require HTTPS and verify certificates when accessing the container registry (defaults to true)")
 	flag.Hidden = true
 	return fs, &opts
 }
@@ -114,13 +89,11 @@ type dockerImageOptions struct {
 	global              *globalOptions             // May be shared across several imageOptions instances.
 	shared              *sharedImageOptions        // May be shared across several imageOptions instances.
 	deprecatedTLSVerify *deprecatedTLSVerifyOption // May be shared across several imageOptions instances, or nil.
-	authFilePath        commonFlag.OptionalString  // Path to a */containers/auth.json (prefixed version to override shared image option).
-	credsOption         commonFlag.OptionalString  // username[:password] for accessing a registry
-	userName            commonFlag.OptionalString  // username for accessing a registry
-	password            commonFlag.OptionalString  // password for accessing a registry
-	registryToken       commonFlag.OptionalString  // token to be used directly as a Bearer token when accessing the registry
+	authFilePath        optionalString             // Path to a */containers/auth.json (prefixed version to override shared image option).
+	credsOption         optionalString             // username[:password] for accessing a registry
+	registryToken       optionalString             // token to be used directly as a Bearer token when accessing the registry
 	dockerCertPath      string                     // A directory using Docker-like *.{crt,cert,key} files for connecting to a registry or a daemon
-	tlsVerify           commonFlag.OptionalBool    // Require HTTPS and verify certificates (for docker: and docker-daemon:)
+	tlsVerify           optionalBool               // Require HTTPS and verify certificates (for docker: and docker-daemon:)
 	noCreds             bool                       // Access the registry anonymously
 }
 
@@ -146,20 +119,18 @@ func dockerImageFlags(global *globalOptions, shared *sharedImageOptions, depreca
 	fs := pflag.FlagSet{}
 	if flagPrefix != "" {
 		// the non-prefixed flag is handled by a shared flag.
-		fs.Var(commonFlag.NewOptionalStringValue(&flags.authFilePath), flagPrefix+"authfile", "path of the authentication file. Default is ${XDG_RUNTIME_DIR}/containers/auth.json")
+		fs.Var(newOptionalStringValue(&flags.authFilePath), flagPrefix+"authfile", "path of the authentication file. Default is ${XDG_RUNTIME_DIR}/containers/auth.json")
 	}
-	fs.Var(commonFlag.NewOptionalStringValue(&flags.credsOption), flagPrefix+"creds", "Use `USERNAME[:PASSWORD]` for accessing the registry")
-	fs.Var(commonFlag.NewOptionalStringValue(&flags.userName), flagPrefix+"username", "Username for accessing the registry")
-	fs.Var(commonFlag.NewOptionalStringValue(&flags.password), flagPrefix+"password", "Password for accessing the registry")
+	fs.Var(newOptionalStringValue(&flags.credsOption), flagPrefix+"creds", "Use `USERNAME[:PASSWORD]` for accessing the registry")
 	if credsOptionAlias != "" {
 		// This is horribly ugly, but we need to support the old option forms of (skopeo copy) for compatibility.
 		// Don't add any more cases like this.
-		f := fs.VarPF(commonFlag.NewOptionalStringValue(&flags.credsOption), credsOptionAlias, "", "Use `USERNAME[:PASSWORD]` for accessing the registry")
+		f := fs.VarPF(newOptionalStringValue(&flags.credsOption), credsOptionAlias, "", "Use `USERNAME[:PASSWORD]` for accessing the registry")
 		f.Hidden = true
 	}
-	fs.Var(commonFlag.NewOptionalStringValue(&flags.registryToken), flagPrefix+"registry-token", "Provide a Bearer token for accessing the registry")
+	fs.Var(newOptionalStringValue(&flags.registryToken), flagPrefix+"registry-token", "Provide a Bearer token for accessing the registry")
 	fs.StringVar(&flags.dockerCertPath, flagPrefix+"cert-dir", "", "use certificates at `PATH` (*.crt, *.cert, *.key) to connect to the registry or daemon")
-	commonFlag.OptionalBoolFlag(&fs, &flags.tlsVerify, flagPrefix+"tls-verify", "require HTTPS and verify certificates when talking to the container registry or daemon")
+	optionalBoolFlag(&fs, &flags.tlsVerify, flagPrefix+"tls-verify", "require HTTPS and verify certificates when talking to the container registry or daemon (defaults to true)")
 	fs.BoolVar(&flags.noCreds, flagPrefix+"no-creds", false, "Access the registry anonymously")
 	return fs, &flags
 }
@@ -175,8 +146,8 @@ 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
@@ -193,49 +164,31 @@ func (opts *imageOptions) newSystemContext() (*types.SystemContext, error) {
 	ctx.AuthFilePath = opts.shared.authFilePath
 	ctx.DockerDaemonHost = opts.dockerDaemonHost
 	ctx.DockerDaemonCertPath = opts.dockerCertPath
-	if opts.dockerImageOptions.authFilePath.Present() {
-		ctx.AuthFilePath = opts.dockerImageOptions.authFilePath.Value()
+	if opts.dockerImageOptions.authFilePath.present {
+		ctx.AuthFilePath = opts.dockerImageOptions.authFilePath.value
 	}
-	if opts.deprecatedTLSVerify != nil && opts.deprecatedTLSVerify.tlsVerify.Present() {
+	if opts.deprecatedTLSVerify != nil && opts.deprecatedTLSVerify.tlsVerify.present {
 		// If both this deprecated option and a non-deprecated option is present, we use the latter value.
-		ctx.DockerInsecureSkipTLSVerify = types.NewOptionalBool(!opts.deprecatedTLSVerify.tlsVerify.Value())
+		ctx.DockerInsecureSkipTLSVerify = types.NewOptionalBool(!opts.deprecatedTLSVerify.tlsVerify.value)
 	}
-	if opts.tlsVerify.Present() {
-		ctx.DockerDaemonInsecureSkipTLSVerify = !opts.tlsVerify.Value()
+	if opts.tlsVerify.present {
+		ctx.DockerDaemonInsecureSkipTLSVerify = !opts.tlsVerify.value
 	}
-	if opts.tlsVerify.Present() {
-		ctx.DockerInsecureSkipTLSVerify = types.NewOptionalBool(!opts.tlsVerify.Value())
+	if opts.tlsVerify.present {
+		ctx.DockerInsecureSkipTLSVerify = types.NewOptionalBool(!opts.tlsVerify.value)
 	}
-	if opts.credsOption.Present() && opts.noCreds {
+	if opts.credsOption.present && opts.noCreds {
 		return nil, errors.New("creds and no-creds cannot be specified at the same time")
 	}
-	if opts.userName.Present() && opts.noCreds {
-		return nil, errors.New("username and no-creds cannot be specified at the same time")
-	}
-	if opts.credsOption.Present() && opts.userName.Present() {
-		return nil, errors.New("creds and username cannot be specified at the same time")
-	}
-	// if any of username or password is present, then both are expected to be present
-	if opts.userName.Present() != opts.password.Present() {
-		if opts.userName.Present() {
-			return nil, errors.New("password must be specified when username is specified")
-		}
-		return nil, errors.New("username must be specified when password is specified")
-	}
-	if opts.credsOption.Present() {
+	if opts.credsOption.present {
 		var err error
-		ctx.DockerAuthConfig, err = getDockerAuth(opts.credsOption.Value())
+		ctx.DockerAuthConfig, err = getDockerAuth(opts.credsOption.value)
 		if err != nil {
 			return nil, err
 		}
-	} else if opts.userName.Present() {
-		ctx.DockerAuthConfig = &types.DockerAuthConfig{
-			Username: opts.userName.Value(),
-			Password: opts.password.Value(),
-		}
 	}
-	if opts.registryToken.Present() {
-		ctx.DockerBearerRegistryToken = opts.registryToken.Value()
+	if opts.registryToken.present {
+		ctx.DockerBearerRegistryToken = opts.registryToken.value
 	}
 	if opts.noCreds {
 		ctx.DockerAuthConfig = &types.DockerAuthConfig{}
@@ -245,30 +198,26 @@ 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
-	dirForceDecompression       bool                   // Decompress layers when saving to the dir: transport
-	ociAcceptUncompressedLayers bool                   // Whether to accept uncompressed layers in the oci: transport
-	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
+	dirForceCompression         bool        // Compress layers when saving to the dir: transport
+	dirForceDecompression       bool        // Decompress layers when saving to the dir: transport
+	ociAcceptUncompressedLayers bool        // Whether to accept uncompressed layers in the oci: transport
+	compressionFormat           string      // Format to use for the compression
+	compressionLevel            optionalInt // Level to use for the compression
 }
 
 // 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)")
 	fs.BoolVar(&opts.dirForceDecompression, flagPrefix+"decompress", false, "Decompress tarball image layers when saving to directory using the 'dir' transport. (default is same compression type as source)")
 	fs.BoolVar(&opts.ociAcceptUncompressedLayers, flagPrefix+"oci-accept-uncompressed-layers", false, "Allow uncompressed image layers when saving to an OCI image using the 'oci' transport. (default is to compress things that aren't compressed)")
 	fs.StringVar(&opts.compressionFormat, flagPrefix+"compress-format", "", "`FORMAT` to use for the compression")
-	fs.Var(commonFlag.NewOptionalIntValue(&opts.compressionLevel), flagPrefix+"compress-level", "`LEVEL` to use for the compression")
-	fs.BoolVar(&opts.precomputeDigests, flagPrefix+"precompute-digests", false, "Precompute digests to prevent uploading layers already on the registry using the 'docker' transport.")
+	fs.Var(newOptionalIntValue(&opts.compressionLevel), flagPrefix+"compress-level", "`LEVEL` to use for the compression")
 	return fs, &opts
 }
 
@@ -290,36 +239,24 @@ func (opts *imageDestOptions) newSystemContext() (*types.SystemContext, error) {
 		}
 		ctx.CompressionFormat = &cf
 	}
-	if opts.compressionLevel.Present() {
-		value := opts.compressionLevel.Value()
-		ctx.CompressionLevel = &value
+	if opts.compressionLevel.present {
+		ctx.CompressionLevel = &opts.compressionLevel.value
 	}
-	ctx.DockerRegistryPushPrecomputeDigests = opts.precomputeDigests
 	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) {
@@ -390,19 +327,3 @@ 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
-}

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{
@@ -180,28 +167,26 @@ func TestImageDestOptionsNewSystemContext(t *testing.T) {
 		"--dest-tls-verify=false",
 		"--dest-creds", "creds-user:creds-password",
 		"--dest-registry-token", "faketoken",
-		"--dest-precompute-digests=true",
 	})
 	res, err = opts.newSystemContext()
 	require.NoError(t, err)
 	assert.Equal(t, &types.SystemContext{
-		RegistriesDirPath:                   "/srv/registries.d",
-		AuthFilePath:                        "/srv/authfile",
-		ArchitectureChoice:                  "overridden-arch",
-		OSChoice:                            "overridden-os",
-		VariantChoice:                       "overridden-variant",
-		OCISharedBlobDirPath:                "/srv/shared-blob-dir",
-		DockerCertPath:                      "/srv/cert-dir",
-		DockerInsecureSkipTLSVerify:         types.OptionalBoolTrue,
-		DockerAuthConfig:                    &types.DockerAuthConfig{Username: "creds-user", Password: "creds-password"},
-		DockerBearerRegistryToken:           "faketoken",
-		DockerDaemonCertPath:                "/srv/cert-dir",
-		DockerDaemonHost:                    "daemon-host.example.com",
-		DockerDaemonInsecureSkipTLSVerify:   true,
-		DockerRegistryUserAgent:             defaultUserAgent,
-		DirForceCompress:                    true,
-		BigFilesTemporaryDir:                "/srv",
-		DockerRegistryPushPrecomputeDigests: true,
+		RegistriesDirPath:                 "/srv/registries.d",
+		AuthFilePath:                      "/srv/authfile",
+		ArchitectureChoice:                "overridden-arch",
+		OSChoice:                          "overridden-os",
+		VariantChoice:                     "overridden-variant",
+		OCISharedBlobDirPath:              "/srv/shared-blob-dir",
+		DockerCertPath:                    "/srv/cert-dir",
+		DockerInsecureSkipTLSVerify:       types.OptionalBoolTrue,
+		DockerAuthConfig:                  &types.DockerAuthConfig{Username: "creds-user", Password: "creds-password"},
+		DockerBearerRegistryToken:         "faketoken",
+		DockerDaemonCertPath:              "/srv/cert-dir",
+		DockerDaemonHost:                  "daemon-host.example.com",
+		DockerDaemonInsecureSkipTLSVerify: true,
+		DockerRegistryUserAgent:           defaultUserAgent,
+		DirForceCompress:                  true,
+		BigFilesTemporaryDir:              "/srv",
 	}, res)
 
 	// Global/per-command tlsVerify behavior is tested in TestTLSVerifyFlags.
@@ -212,54 +197,6 @@ func TestImageDestOptionsNewSystemContext(t *testing.T) {
 	assert.Error(t, err)
 }
 
-// TestImageOptionsUsernamePassword verifies that using the username and password
-// options works as expected
-func TestImageOptionsUsernamePassword(t *testing.T) {
-	for _, command := range []struct {
-		commandArgs        []string
-		expectedAuthConfig *types.DockerAuthConfig // data to expect, or nil if an error is expected
-	}{
-		// Set only username/password (without --creds), expected to pass
-		{
-			commandArgs:        []string{"--dest-username", "foo", "--dest-password", "bar"},
-			expectedAuthConfig: &types.DockerAuthConfig{Username: "foo", Password: "bar"},
-		},
-		// no username but set password, expect error
-		{
-			commandArgs:        []string{"--dest-password", "foo"},
-			expectedAuthConfig: nil,
-		},
-		// set username but no password. expected to fail (we currently don't allow a user without password)
-		{
-			commandArgs:        []string{"--dest-username", "bar"},
-			expectedAuthConfig: nil,
-		},
-		// set username with --creds, expected to fail
-		{
-			commandArgs:        []string{"--dest-username", "bar", "--dest-creds", "hello:world", "--dest-password", "foo"},
-			expectedAuthConfig: nil,
-		},
-		// set username with --no-creds, expected to fail
-		{
-			commandArgs:        []string{"--dest-username", "bar", "--dest-no-creds", "--dest-password", "foo"},
-			expectedAuthConfig: nil,
-		},
-	} {
-		opts := fakeImageDestOptions(t, "dest-", true, []string{}, command.commandArgs)
-		// parse the command options
-		res, err := opts.newSystemContext()
-		if command.expectedAuthConfig == nil {
-			assert.Error(t, err)
-		} else {
-			require.NoError(t, err)
-			assert.Equal(t, &types.SystemContext{
-				DockerRegistryUserAgent: defaultUserAgent,
-				DockerAuthConfig:        command.expectedAuthConfig,
-			}, res)
-		}
-	}
-}
-
 func TestTLSVerifyFlags(t *testing.T) {
 	type systemContextOpts interface { // Either *imageOptions or *imageDestOptions
 		newSystemContext() (*types.SystemContext, error)
@@ -385,6 +322,7 @@ 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 +1,316 @@
+#! /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
+    --sign-by
+    --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
+    "
+
+    local boolean_options="
+    --all
+    --dest-compress
+    --dest-decompress
+    --remove-signatures
+    --src-no-creds
+    --dest-no-creds
+    --dest-oci-accept-uncompressed-layers
+    "
+
+    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
+    --src
+    --src-authfile
+    --src-cert-dir
+    --src-creds
+    --src-registry-token
+    "
+
+    local boolean_options="
+    --all
+    --dest-no-creds
+    --dest-tls-verify
+    --remove-signatures
+    --scoped
+    --src-no-creds
+    --src-tls-verify
+    "
+
+    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
+     "
+     local boolean_options="
+     --config
+     --raw
+     --tls-verify
+     --no-creds
+    "
+
+    local transports
+    transports="
+    $(_skopeo_supported_transports "${FUNCNAME//"_skopeo_"/}")
+    "
+
+    _complete_ "$options_with_args" "$boolean_options" "$transports"
+}
+
+_skopeo_standalone_sign() {
+     local options_with_args="
+       -o --output
+     "
+     local boolean_options="
+     "
+    _complete_ "$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
+     "
+     local boolean_options="
+     --tls-verify
+     --no-creds
+     "
+
+    local transports
+    transports="
+    $(_skopeo_supported_transports "${FUNCNAME//"_skopeo_"/}")
+    "
+
+    _complete_ "$options_with_args" "$boolean_options" "$transports"
+}
+
+_skopeo_layers() {
+     local options_with_args="
+       --authfile
+       --creds
+       --cert-dir
+       --registry-token
+     "
+     local boolean_options="
+       --tls-verify
+       --no-creds
+     "
+    _complete_ "$options_with_args" "$boolean_options"
+}
+
+_skopeo_list_repository_tags() {
+     local options_with_args="
+     --authfile
+     --creds
+     --cert-dir
+     --registry-token
+     "
+
+     local boolean_options="
+     --tls-verify
+     --no-creds
+     "
+    _complete_ "$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/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 erase -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

@@ -6,19 +6,6 @@
 
 set -e
 
-# BEGIN Global export of all variables
-set -a
-
-# Due to differences across platforms and runtime execution environments,
-# handling of the (otherwise) default shell setup is non-uniform.  Rather
-# than attempt to workaround differences, simply force-load/set required
-# items every time this library is utilized.
-USER="$(whoami)"
-HOME="$(getent passwd $USER | cut -d : -f 6)"
-# Some platforms set and make this read-only
-[[ -n "$UID" ]] || \
-    UID=$(getent passwd $USER | cut -d : -f 3)
-
 if [[ -r "/etc/automation_environment" ]]; then
     source /etc/automation_environment
     source $AUTOMATION_LIB_PATH/common_lib.sh
@@ -30,78 +17,48 @@ else
     ) > /dev/stderr
 fi
 
-# This is the magic interpreted by the tests to allow modifying local config/services.
-SKOPEO_CONTAINER_TESTS=1
+OS_RELEASE_ID="$(source /etc/os-release; echo $ID)"
+# GCE image-name compatible string representation of distribution _major_ version
+OS_RELEASE_VER="$(source /etc/os-release; echo $VERSION_ID | tr -d '.')"
+# Combined to ease some usage
+OS_REL_VER="${OS_RELEASE_ID}-${OS_RELEASE_VER}"
 
-PATH=$PATH:$GOPATH/bin
-
-# END Global export of all variables
-set +a
+export "PATH=$PATH:$GOPATH/bin"
 
+podmanmake() {
+    req_env_vars GOPATH SKOPEO_PATH SKOPEO_CI_CONTAINER_FQIN
+    warn "Accumulated technical-debt requires execution inside a --privileged container.  This is very likely hiding bugs!"
+    showrun podman run -it --rm --privileged \
+        -e GOPATH=$GOPATH \
+        -v $GOPATH:$GOPATH:Z \
+        -w $SKOPEO_PATH \
+        $SKOPEO_CI_CONTAINER_FQIN \
+            make "$@"
+}
 
 _run_setup() {
-    local mnt
-    local errmsg
-    req_env_vars SKOPEO_CIDEV_CONTAINER_FQIN
-    if [[ "$OS_RELEASE_ID" != "fedora" ]]; then
+    if [[ "$OS_RELEASE_ID" == "fedora" ]]; then
+        # This is required as part of the standard Fedora VM setup
+        growpart /dev/sda 1
+        resize2fs /dev/sda1
+
+        # VM's come with the distro. skopeo pre-installed
+        dnf erase -y skopeo
+    else
         die "Unknown/unsupported distro. $OS_REL_VER"
     fi
-
-    if [[ -r "/.ci_setup_complete" ]]; then
-        warn "Thwarted an attempt to execute setup more than once."
-        return
-    fi
-
-    # VM's come with the distro. skopeo package pre-installed
-    dnf erase -y skopeo
-
-    msg "Removing systemd-resolved from nsswitch.conf"
-    # /etc/resolv.conf is already set to bypass systemd-resolvd
-    sed -i -r -e 's/^(hosts.+)resolve.+dns/\1dns/' /etc/nsswitch.conf
-
-    # A slew of compiled binaries are pre-built and distributed
-    # within the CI/Dev container image, but we want to run
-    # things directly on the host VM.  Fortunately they're all
-    # located in the container under /usr/local/bin
-    msg "Accessing contents of $SKOPEO_CIDEV_CONTAINER_FQIN"
-    podman pull --quiet $SKOPEO_CIDEV_CONTAINER_FQIN
-    mnt=$(podman mount $(podman create $SKOPEO_CIDEV_CONTAINER_FQIN))
-
-    # The container and VM images are built in tandem in the same repo.
-    # automation, but the sources are in different directories.  It's
-    # possible for a mismatch to happen, but should (hopefully) be unlikely.
-    # Double-check to make sure.
-    if ! fgrep -qx "ID=$OS_RELEASE_ID" $mnt/etc/os-release || \
-       ! fgrep -qx "VERSION_ID=$OS_RELEASE_VER" $mnt/etc/os-release; then
-            die "Somehow $SKOPEO_CIDEV_CONTAINER_FQIN is not based on $OS_REL_VER."
-    fi
-    msg "Copying test binaries from $SKOPEO_CIDEV_CONTAINER_FQIN /usr/local/bin/"
-    cp -a "$mnt/usr/local/bin/"* "/usr/local/bin/"
-    msg "Configuring the openshift registry"
-
-    # TODO: Put directory & yaml into more sensible place + update integration tests
-    mkdir -vp /registry
-    cp -a "$mnt/atomic-registry-config.yml" /
-
-    msg "Cleaning up"
-    podman umount --latest
-    podman rm --latest
-
-    # Ensure setup can only run once
-    touch "/.ci_setup_complete"
 }
 
 _run_vendor() {
-    make vendor BUILDTAGS="$BUILDTAGS"
+    podmanmake vendor BUILDTAGS="$BUILDTAGS"
 }
 
 _run_build() {
     make bin/skopeo BUILDTAGS="$BUILDTAGS"
-    make install PREFIX=/usr/local
 }
 
 _run_cross() {
-    make local-cross BUILDTAGS="$BUILDTAGS"
+    podmanmake local-cross BUILDTAGS="$BUILDTAGS"
 }
 
 _run_doccheck() {
@@ -109,23 +66,18 @@ _run_doccheck() {
 }
 
 _run_unit() {
-    make test-unit-local BUILDTAGS="$BUILDTAGS"
-}
-
-_podman_reset() {
-    # Ensure we start with a clean-slate
-    showrun podman system reset --force
+    podmanmake test-unit-local BUILDTAGS="$BUILDTAGS"
 }
 
 _run_integration() {
-    _podman_reset
-    make test-integration-local BUILDTAGS="$BUILDTAGS"
+    podmanmake test-integration-local BUILDTAGS="$BUILDTAGS"
 }
 
 _run_system() {
-    _podman_reset
-    ##### Note: Test MODIFIES THE HOST SETUP #####
-    make test-system-local BUILDTAGS="$BUILDTAGS"
+    # Ensure we start with a clean-slate
+    podman system reset --force
+    # Executes with containers required for testing.
+    showrun make test-system-local BUILDTAGS="$BUILDTAGS"
 }
 
 req_env_vars SKOPEO_PATH 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:33
+
+# 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:33
+
+# 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:33
+
+# 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).
@@ -56,12 +54,6 @@ Directory to use to share blobs across OCI repositories.
 
 After copying the image, write the digest of the resulting image to the file.
 
-**--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.
-
 **--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)
@@ -74,17 +66,6 @@ MANIFEST TYPE (oci, v2s1, or v2s2) to use in the destination (default is manifes
 
 Print usage statement
 
-**--multi-arch** _option_
-
-Control what is copied if _source-image_ refers to a multi-architecture image. Default is system.
-
-Options:
-- system: Copy only the image that matches the system architecture
-- all: Copy the full multi-architecture image
-- index-only: Copy only the index
-
-The index-only option usually fails unless the referenced per-architecture images are already present in the destination, or the target registry supports sparse indexes.
-
 **--quiet**, **-q**
 
 Suppress output information when copying images.
@@ -93,26 +74,9 @@ 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_
-
-**--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-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.
+Add a signature using that key ID for an image name corresponding to _destination-image_
 
 **--src-shared-blob-dir** _directory_
 
@@ -130,15 +94,15 @@ Key to be used for decryption of images. Key can point to keys and/or certificat
 
 Credentials for accessing the source registry.
 
-**--dest-compress**
+**--dest-compress** _bool-value_
 
 Compress tarball image layers when saving to directory using the 'dir' transport. (default is same compression type as source).
 
-**--dest-decompress**
+**--dest-decompress** _bool-value_
 
 Decompress tarball image layers when saving to directory using the 'dir' transport. (default is same compression type as source).
 
-**--dest-oci-accept-uncompressed-layers**
+**--dest-oci-accept-uncompressed-layers** _bool-value_
 
 Allow uncompressed image layers when saving to an OCI image using the 'oci' transport. (default is to compress things that aren't compressed).
 
@@ -150,25 +114,25 @@ Credentials for accessing the destination registry.
 
 Use certificates at _path_ (*.crt, *.cert, *.key) to connect to the source registry or daemon.
 
-**--src-no-creds**
+**--src-no-creds** _bool-value_
 
 Access the registry anonymously.
 
-**--src-tls-verify**=_bool_
+**--src-tls-verify** _bool-value_
 
-Require HTTPS and verify certificates when talking to container source registry or daemon. Default to source registry setting.
+Require HTTPS and verify certificates when talking to container source registry or daemon (defaults to true).
 
 **--dest-cert-dir** _path_
 
 Use certificates at _path_ (*.crt, *.cert, *.key) to connect to the destination registry or daemon.
 
-**--dest-no-creds**
+**--dest-no-creds** _bool-value_
 
 Access the registry anonymously.
 
-**--dest-tls-verify**=_bool_
+**--dest-tls-verify** _bool-value_
 
-Require HTTPS and verify certificates when talking to container destination registry or daemon. Default to destination registry setting.
+Require HTTPS and verify certificates when talking to container destination registry or daemon (defaults to true).
 
 **--src-daemon-host** _host_
 
@@ -182,7 +146,7 @@ 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`.
+Specifies the compression format to use.  Supported values are: `gzip` and `zstd`.
 
 **--dest-compress-level** _format_
 
@@ -196,39 +160,19 @@ Bearer token for accessing the source registry.
 
 Bearer token for accessing the destination registry.
 
-**--dest-precompute-digests**
-
-Precompute digests to ensure layers are not uploaded that already exist on the destination registry. Layers with initially unknown digests (ex. compressing "on the fly") will be temporarily streamed to disk.
-
 **--retry-times**
 
 The number of times to retry. Retry wait time will be exponentially increased based on the number of failed attempts.
 
-**--src-username**
-
-The username to access the source registry.
-
-**--src-password**
-
-The password to access the source registry.
-
-**--dest-username**
-
-The username to access the destination registry.
-
-**--dest-password**
-
-The password to access the destination registry.
-
 ## 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/*
@@ -237,46 +181,42 @@ $ 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`.
@@ -54,7 +42,7 @@ Use docker daemon host at _host_ (`docker-daemon:` transport only)
 
 Print usage statement
 
-**--no-creds**
+**--no-creds** _bool-value_
 
 Access the registry anonymously.
 
@@ -74,21 +62,13 @@ Directory to use to share blobs across OCI repositories.
 
 **--tls-verify**=_bool_
 
-Require HTTPS and verify certificates when talking to the container registry or daemon. Default to registry.conf setting.
-
-**--username**
-
-The username to access the registry.
-
-**--password**
-
-The password to access the registry.
+Require HTTPS and verify certificates when talking to the container registry or daemon (defaults to true)
 
 ## 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 private 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

@@ -8,17 +8,12 @@ skopeo\-inspect - Return low-level information about _image-name_ in a registry.
 
 ## DESCRIPTION
 
-Return low-level information about _image-name_ in a registry.
-See [skopeo(1)](skopeo.1.md) for the format of _image-name_.
+Return low-level information about _image-name_ in a registry
 
-The default output includes data from various sources: user input (**Name**), the remote repository, if any (**RepoTags**), the top-level manifest (**Digest**),
-and a per-architecture/OS image matching the current run-time environment (most other values).
-To see values for a different architecture/OS, use the **--override-os** / **--override-arch** options documented in [skopeo(1)](skopeo.1.md).
+_image-name_ name of image to retrieve information about
 
 ## 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 +39,6 @@ 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**
 
@@ -73,107 +67,43 @@ Directory to use to share blobs across OCI repositories.
 
 **--tls-verify**=_bool_
 
-Require HTTPS and verify certificates when talking to the container registry or daemon. Default to registry.conf setting.
-
-**--username**
-
-The username to access the registry.
-
-**--password**
-
-The password to access the registry.
-
-**--no-tags**, **-n**
-
-Do not list the available tags from the repository in the output. When `true`, the `RepoTags` array will be empty.  Defaults to `false`, which includes all available tags.
+Require HTTPS and verify certificates when talking to the container registry or daemon (defaults to true)
 
 ## 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
-$ skopeo inspect --no-tags docker://docker.io/library/python
-{
-    "Name": "docker.io/library/python",
-    "Digest": "sha256:10fc14aa6ae69f69e4c953cffd9b0964843d8c163950491d2138af891377bc1d",
-    "RepoTags": [],
-    "Created": "2022-11-16T06:55:28.566254104Z",
-    "DockerVersion": "20.10.12",
-    "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
-        },
-        "..."
-    ],
-    "Env": [
-        "PATH=/usr/local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
-        "LANG=C.UTF-8",
-        "...",
-    ]
-}
 ```
-
-```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`.
@@ -29,7 +27,7 @@ Use certificates at _path_ (\*.crt, \*.cert, \*.key) to connect to the registry.
 
 Print usage statement
 
-**--no-creds**
+**--no-creds** _bool-value_
 
 Access the registry anonymously.
 
@@ -43,19 +41,11 @@ The number of times to retry. Retry wait time will be exponentially increased ba
 
 **--tls-verify**=_bool_
 
-Require HTTPS and verify certificates when talking to the container registry or daemon. Default to registry.conf setting.
-
-**--username**
-
-The username to access the registry.
-
-**--password**
-
-The password to access the registry.
+Require HTTPS and verify certificates when talking to the container registry or daemon (defaults to true)
 
 ## 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 +64,12 @@ 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 +100,7 @@ $ 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 +113,8 @@ $ 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.
@@ -55,7 +49,7 @@ Print usage statement
 
 **--tls-verify**=_bool_
 
-Require HTTPS and verify certificates when talking to the container registry or daemon. Default to registry.conf setting.
+Require HTTPS and verify certificates when talking to the container registry or daemon (defaults to true)
 
 **--verbose**, **-v**
 
@@ -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
@@ -37,21 +31,21 @@ Print usage statement
 
 **--tls-verify**=_bool_
 
-Require HTTPS and verify certificates when talking to the container registry or daemon. Default to registry.conf setting.
+Require HTTPS and verify certificates when talking to the container registry or daemon (defaults to true)
 
 ## 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

@@ -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
@@ -27,13 +25,9 @@ Print usage statement
 
 Write signature to _output file_.
 
-**--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.
-
 ## EXAMPLES
 
-```console
+```sh
 $ skopeo standalone-sign busybox-manifest.json registry.example.com/example/busybox 1D8230F6CDB6A06716E414C1DB72F2188BB46CC8 --output busybox.signature
 $
 ```

docs/skopeo-standalone-verify.1.md

@@ -4,7 +4,7 @@
 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.
@@ -66,32 +62,9 @@ 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.
-
-**--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.
-
 **--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_
-
-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-by**=_key-id_ Add a signature using that key ID for an image name corresponding to _destination-image_.
 
 **--src-creds** _username[:password]_ for accessing the source registry.
 
@@ -99,15 +72,15 @@ The passphare to use when signing with `--sign-by` or `--sign-by-sigstore-privat
 
 **--src-cert-dir** _path_ Use certificates (*.crt, *.cert, *.key) at _path_ to connect to the source registry or daemon.
 
-**--src-no-creds** Access the registry anonymously.
+**--src-no-creds** _bool-value_ Access the registry anonymously.
 
-**--src-tls-verify**=_bool_ Require HTTPS and verify certificates when talking to a container source registry or daemon. Default to source registry entry in registry.conf setting.
+**--src-tls-verify** _bool-value_ Require HTTPS and verify certificates when talking to a container source registry or daemon (defaults to true).
 
 **--dest-cert-dir** _path_ Use certificates (*.crt, *.cert, *.key) at _path_ to connect to the destination registry or daemon.
 
-**--dest-no-creds** Access the registry anonymously.
+**--dest-no-creds** _bool-value_  Access the registry anonymously.
 
-**--dest-tls-verify**=_bool_ Require HTTPS and verify certificates when talking to a container destination registry or daemon. Default to destination registry entry in registry.conf setting.
+**--dest-tls-verify** _bool-value_ Require HTTPS and verify certificates when talking to a container destination registry or daemon (defaults to true).
 
 **--src-registry-token** _Bearer token_ for accessing the source registry.
 
@@ -115,29 +88,10 @@ The passphare to use when signing with `--sign-by` or `--sign-by-sigstore-privat
 
 **--retry-times**  the number of times to retry, retry wait time will be exponentially increased based on the number of failed attempts.
 
-**--keep-going**
-If any errors occur during copying of images, those errors are logged and the process continues syncing rest of the images and finally fails at the end.
-
-**--src-username**
-
-The username to access the source registry.
-
-**--src-password**
-
-The password to access the source registry.
-
-**--dest-username**
-
-The username to access the destination registry.
-
-**--dest-password**
-
-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:
@@ -155,7 +109,7 @@ 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:
@@ -165,7 +119,7 @@ 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:
@@ -178,8 +132,8 @@ 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:
 ```
@@ -188,8 +142,8 @@ 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:
 ```
@@ -197,16 +151,6 @@ 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
@@ -219,8 +163,6 @@ 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
@@ -233,22 +175,14 @@ 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.
@@ -104,24 +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 - 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 registry repositories and local directories.                |
+| [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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+       d="m 206.89258,220.23959 -0.29297,0.0352 -0.23633,0.0527 -0.26953,0.0898 -0.2793,0.125 -0.23437,0.13477 -0.20508,0.14648 -0.2207,0.19532 -0.18946,0.20117 -0.006,0.008 0.004,-0.008 -0.006,0.01 -0.008,0.01 -0.004,0.004 -0.006,0.006 -0.12109,0.1582 -0.002,0.004 -0.002,0.002 -0.16406,0.26758 -0.12109,0.24804 -0.0996,0.28125 -0.0645,0.24219 -0.0371,0.26367 -0.0176,0.31641 0.008,0.18164 0.0332,0.28711 0.0527,0.23437 0.004,0.0117 0.0937,0.28516 0.11133,0.24805 0.13086,0.23046 0.16992,0.23829 0.1836,0.20898 0.21093,0.19727 0.19532,0.14843 0.25586,0.15625 0.24218,0.11719 0.26172,0.0977 0.27344,0.0684 0.27344,0.043 0.29297,0.0137 0.18164,-0.008 0.29687,-0.0351 0.24024,-0.0547 0.27539,-0.0898 0.24218,-0.10938 0.25,-0.14453 0.23047,-0.16406 0.20899,-0.1836 0.20508,-0.21875 0.125,-0.16406 0.004,-0.006 0.1582,-0.25781 0.004,-0.008 0.12695,-0.26172 0.0996,-0.27344 0.002,-0.006 0.0586,-0.24023 0.0391,-0.26563 0.0176,-0.3125 -0.008,-0.17968 -0.0332,-0.28711 -0.0527,-0.23438 -0.004,-0.0117 -0.0937,-0.28515 -0.11132,-0.24805 -0.13086,-0.23047 -0.16993,-0.23828 -0.18554,-0.20899 -0.19922,-0.18945 -0.21875,-0.16406 -0.23828,-0.14844 -0.26563,-0.12695 -0.01,-0.004 -0.21875,-0.0801 -0.28516,-0.0723 -0.27344,-0.043 -0.29492,-0.0137 z"
+       id="ellipse84292"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:url(#linearGradient84425);fill-opacity:1;fill-rule:evenodd;stroke:none;stroke-width:0.79374999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+       d="m 183.23633,227.10092 c 5.59753,3.20336 12.36881,4.51528 18.71366,3.17108 1.59516,-0.38 3.17489,-0.99021 4.44874,-2.04739 -0.73893,-0.64617 -1.68301,-0.99544 -2.49844,-1.53493 -3.78032,-2.18293 -7.56064,-4.36587 -11.34096,-6.5488 -3.10767,2.32001 -6.21533,4.64003 -9.323,6.96004 z"
+       id="path84298"
+       inkscape:connector-curvature="0"
+       sodipodi:nodetypes="cccccc" />
+    <path
+       style="fill:url(#linearGradient84479);fill-opacity:1;stroke:none;stroke-width:0.79375005;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:5.99999952"
+       d="m 238.62695,269.97787 0.006,-0.002 0.39453,-0.27735 0.41797,-0.34179 0.002,-0.002 0.45703,-0.42382 0.47851,-0.49219 0.0156,-0.0176 0.47656,-0.53711 0.002,-0.002 0.0117,-0.0137 0.48438,-0.5918 0.0117,-0.0156 0.49023,-0.64257 0.01,-0.0137 0.49609,-0.69726 0.48047,-0.71875 0.01,-0.0137 0.46485,-0.74805 0.004,-0.008 0.002,-0.002 0.30468,-0.51562 0.008,-0.0117 0.4375,-0.78711 0.40625,-0.77734 0.008,-0.0137 0.37109,-0.77149 0.008,-0.0156 0.33789,-0.75977 0.006,-0.0156 0.30078,-0.73829 0.27148,-0.74609 0.21289,-0.66602 0.17969,-0.66796 v -0.002 l 0.12305,-0.58203 0.002,-0.0137 0.0723,-0.51562 0.0176,-0.31836 z"
+       id="path84379"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:url(#linearGradient84408);fill-opacity:1;stroke:none;stroke-width:0.79374999;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:5.99999952"
+       d="m 202.78906,251.42318 2.08399,1.20118 9.6289,-16.67969 -2.08203,-1.20117 z"
+       id="rect84396"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:url(#linearGradient84441);fill-opacity:1;stroke:none;stroke-width:0.79374999;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:5.99999952"
+       d="m 169.0918,226.26889 2.35937,1.36133 4.69336,-8.13086 -2.35937,-1.36133 z"
+       id="rect84429"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:url(#linearGradient84455);fill-opacity:1;stroke:none;stroke-width:0.79374999;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:5.99999952"
+       d="m 234.17188,269.53842 2.08203,1.20312 9.63086,-16.67773 -2.08399,-1.20313 z"
+       id="rect84443"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:#ffffff;fill-rule:evenodd;stroke:#f8ead2;stroke-width:0.52916664;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+       d="m 215.55025,240.82707 22.49734,12.98884"
+       id="path84521"
+       inkscape:connector-curvature="0" />
   </g>
 </svg>

go.mod

@@ -1,140 +1,26 @@
 module github.com/containers/skopeo
 
-go 1.19
+go 1.12
 
 require (
-	github.com/Masterminds/semver/v3 v3.2.1
-	github.com/containers/common v0.58.0
-	github.com/containers/image/v5 v5.30.0
-	github.com/containers/ocicrypt v1.1.10
-	github.com/containers/storage v1.53.0
-	github.com/docker/distribution v2.8.3+incompatible
-	github.com/opencontainers/go-digest v1.0.0
-	github.com/opencontainers/image-spec v1.1.0
-	github.com/opencontainers/image-tools v1.0.0-rc3
-	github.com/sirupsen/logrus v1.9.3
-	github.com/spf13/cobra v1.8.0
-	github.com/spf13/pflag v1.0.5
-	github.com/stretchr/testify v1.9.0
-	github.com/syndtr/gocapability v0.0.0-20200815063812-42c35b437635
-	golang.org/x/exp v0.0.0-20240222234643-814bf88cf225
-	golang.org/x/term v0.18.0
-	gopkg.in/yaml.v3 v3.0.1
-)
-
-require (
-	dario.cat/mergo v1.0.0 // indirect
-	github.com/BurntSushi/toml v1.3.2 // indirect
-	github.com/Microsoft/go-winio v0.6.1 // indirect
-	github.com/Microsoft/hcsshim v0.12.0-rc.3 // 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 v3.0.2 // indirect
-	github.com/containerd/errdefs v0.1.0 // indirect
-	github.com/containerd/stargz-snapshotter/estargz v0.15.1 // indirect
-	github.com/containers/libtrust v0.0.0-20230121012942-c1716e8a8d01 // indirect
-	github.com/coreos/go-oidc/v3 v3.9.0 // indirect
-	github.com/cyberphone/json-canonicalization v0.0.0-20231217050601-ba74d44ecf5f // indirect
-	github.com/cyphar/filepath-securejoin v0.2.4 // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/distribution/reference v0.5.0 // indirect
-	github.com/docker/docker v25.0.3+incompatible // indirect
-	github.com/docker/docker-credential-helpers v0.8.1 // indirect
-	github.com/docker/go-connections v0.5.0 // indirect
-	github.com/docker/go-units v0.5.0 // indirect
+	github.com/containers/common v0.42.1
+	github.com/containers/image/v5 v5.15.2
+	github.com/containers/ocicrypt v1.1.2
+	github.com/containers/storage v1.34.1
+	github.com/docker/docker v20.10.8+incompatible
 	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-logr/logr v1.3.0 // indirect
-	github.com/go-logr/stdr v1.2.2 // indirect
-	github.com/go-openapi/analysis v0.21.4 // indirect
-	github.com/go-openapi/errors v0.21.1 // indirect
-	github.com/go-openapi/jsonpointer v0.19.6 // indirect
-	github.com/go-openapi/jsonreference v0.20.2 // indirect
-	github.com/go-openapi/loads v0.21.2 // indirect
-	github.com/go-openapi/runtime v0.26.0 // indirect
-	github.com/go-openapi/spec v0.20.9 // indirect
-	github.com/go-openapi/strfmt v0.22.2 // indirect
-	github.com/go-openapi/swag v0.22.10 // indirect
-	github.com/go-openapi/validate v0.22.1 // indirect
-	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
-	github.com/golang/protobuf v1.5.3 // indirect
-	github.com/google/go-containerregistry v0.19.0 // 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/hashicorp/go-multierror v1.1.1 // indirect
-	github.com/hashicorp/go-retryablehttp v0.7.5 // indirect
-	github.com/inconshreveable/mousetrap v1.1.0 // indirect
-	github.com/josharian/intern v1.0.0 // indirect
-	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/klauspost/compress v1.17.7 // indirect
-	github.com/klauspost/pgzip v1.2.6 // indirect
-	github.com/kr/pretty v0.3.1 // indirect
-	github.com/letsencrypt/boulder v0.0.0-20230907030200-6d76a0f91e1e // indirect
-	github.com/mailru/easyjson v0.7.7 // indirect
-	github.com/mattn/go-runewidth v0.0.15 // indirect
-	github.com/mattn/go-shellwords v1.0.12 // indirect
-	github.com/mattn/go-sqlite3 v1.14.22 // 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/sys/mountinfo v0.7.1 // indirect
-	github.com/moby/sys/user v0.1.0 // 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 v1.11.0 // 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 v1.0.0 // indirect
-	github.com/proglottis/gpgme v0.1.3 // indirect
-	github.com/rivo/uniseg v0.4.4 // indirect
+	github.com/go-check/check v0.0.0-20180628173108-788fd7840127
+	github.com/onsi/gomega v1.15.0 // indirect
+	github.com/opencontainers/go-digest v1.0.0
+	github.com/opencontainers/image-spec v1.0.2-0.20190823105129-775207bd45b6
+	github.com/opencontainers/image-tools v0.0.0-20170926011501-6d941547fa1d
+	github.com/pkg/errors v0.9.1
 	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 v1.4.3 // indirect
-	github.com/sigstore/rekor v1.2.2 // indirect
-	github.com/sigstore/sigstore v1.8.2 // indirect
-	github.com/skratchdot/open-golang v0.0.0-20200116055534-eef842397966 // indirect
-	github.com/stefanberger/go-pkcs11uri v0.0.0-20201008174630-78d3cae3a980 // indirect
-	github.com/sylabs/sif/v2 v2.15.1 // 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 v0.5.11 // indirect
-	github.com/vbatts/tar-split v0.11.5 // indirect
-	github.com/vbauerster/mpb/v8 v8.7.2 // indirect
-	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // 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 v0.45.0 // indirect
-	go.opentelemetry.io/otel v1.19.0 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.19.0 // indirect
-	go.opentelemetry.io/otel/metric v1.19.0 // indirect
-	go.opentelemetry.io/otel/trace v1.19.0 // indirect
-	go.opentelemetry.io/proto/otlp v1.0.0 // indirect
-	golang.org/x/crypto v0.21.0 // indirect
-	golang.org/x/mod v0.15.0 // indirect
-	golang.org/x/net v0.22.0 // indirect
-	golang.org/x/oauth2 v0.18.0 // indirect
-	golang.org/x/sync v0.6.0 // indirect
-	golang.org/x/sys v0.18.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
-	golang.org/x/tools v0.18.0 // indirect
-	google.golang.org/appengine v1.6.8 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20231002182017-d307bd883b97 // indirect
-	google.golang.org/grpc v1.59.0 // indirect
-	google.golang.org/protobuf v1.33.0 // indirect
-	gopkg.in/go-jose/go-jose.v2 v2.6.3 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
+	github.com/sirupsen/logrus v1.8.1
+	github.com/spf13/cobra v1.2.1
+	github.com/spf13/pflag v1.0.5
+	github.com/stretchr/testify v1.7.0
+	github.com/syndtr/gocapability v0.0.0-20200815063812-42c35b437635
+	go4.org v0.0.0-20190218023631-ce4c26f7be8e // indirect
+	gopkg.in/yaml.v2 v2.4.0
 )

hack/btrfs_installed_tag.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash
 cc -E - > /dev/null 2> /dev/null << EOF
 #include <btrfs/ioctl.h>
 EOF

hack/btrfs_tag.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash
 cc -E - > /dev/null 2> /dev/null << EOF
 #include <btrfs/version.h>
 EOF

hack/get_fqin.sh

@@ -1,34 +0,0 @@
-#!/usr/bin/env bash
-
-# This script is intended to be called from the Makefile.  It's purpose
-# is to automation correspondence between the environment used for local
-# development and CI.
-
-set -e
-
-SCRIPT_FILEPATH=$(realpath "${BASH_SOURCE[0]}")
-SCRIPT_DIRPATH=$(dirname "$SCRIPT_FILEPATH")
-REPO_DIRPATH=$(realpath "$SCRIPT_DIRPATH/../")
-
-# When running under CI, we already have the necessary information,
-# simply provide it to the Makefile.
-if [[ -n "$SKOPEO_CIDEV_CONTAINER_FQIN" ]]; then
-    echo "$SKOPEO_CIDEV_CONTAINER_FQIN"
-    exit 0
-fi
-
-if [[ -n $(command -v podman) ]]; then CONTAINER_RUNTIME=podman; fi
-CONTAINER_RUNTIME=${CONTAINER_RUNTIME:-docker}
-
-# Borrow the get_ci_vm container image since it's small, and
-# by necessity contains a script that can accurately interpret
-# env. var. values from any .cirrus.yml runtime context.
-$CONTAINER_RUNTIME run --rm \
-    --security-opt label=disable \
-    -v $REPO_DIRPATH:/src:ro \
-    --entrypoint=/usr/share/automation/bin/cirrus-ci_env.py \
-    quay.io/libpod/get_ci_vm:latest \
-    --envs="Skopeo Test" /src/.cirrus.yml | \
-    egrep -m1 '^SKOPEO_CIDEV_CONTAINER_FQIN' | \
-    awk -F "=" -e '{print $2}' | \
-    tr -d \'\"

hack/libdm_tag.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash
 tmpdir="$PWD/tmp.$RANDOM"
 mkdir -p "$tmpdir"
 trap 'rm -fr "$tmpdir"' EXIT

hack/libsubid_tag.sh

@@ -1,24 +0,0 @@
-#!/usr/bin/env bash
-if test $(${GO:-go} env GOOS) != "linux" ; then
-	exit 0
-fi
-tmpdir="$PWD/tmp.$RANDOM"
-mkdir -p "$tmpdir"
-trap 'rm -fr "$tmpdir"' EXIT
-cc -o "$tmpdir"/libsubid_tag -x c - -l subid > /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;
-}
-EOF
-if test $? -eq 0 ; then
-	echo libsubid
-fi

hack/make.sh

@@ -0,0 +1,107 @@
+#!/usr/bin/env bash
+set -e
+
+# This script builds various binary from a checkout of the skopeo
+# source code.
+#
+# 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 docker container specified
+#   in the Dockerfile at the root of the source. In other words:
+#   DO NOT CALL THIS SCRIPT DIRECTLY.
+# - 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"
+
+# We're a nice, sexy, little shell script, and people might try to run us;
+# but really, they shouldn't. We want to be in a container!
+# The magic value is defined inside our Dockerfile.
+if [[ "$container_magic" != "85531765-346b-4316-bdb8-358e4cca9e5d" ]]; then
+	{
+		echo "# WARNING! I don't seem to be running in a Docker container."
+		echo "# The result of this command might be an incorrect build, and will not be"
+		echo "# officially supported."
+		echo "#"
+		echo "# Try this instead: make all"
+		echo "#"
+	} >&2
+else
+    echo "# I appear to be running inside my designated container image, good!"
+    export SKOPEO_CONTAINER_TESTS=1
+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
+)
+
+TESTFLAGS+=" -test.timeout=15m"
+
+# 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
+
+# If $TESTFLAGS is set in the environment, it is passed as extra arguments to 'go test'.
+# You can use this to select certain tests to run, eg.
+#
+#     TESTFLAGS='-test.run ^TestBuild$' ./hack/make.sh test-unit
+#
+# For integration-cli test, we use [gocheck](https://labix.org/gocheck), if you want
+# to run certain tests on your local host, you should run with command:
+#
+#     TESTFLAGS='-check.f DockerSuite.TestBuild*' ./hack/make.sh binary test-integration-cli
+#
+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 +1,14 @@
+#!/bin/bash
+set -e
+
+bundle_test_integration() {
+	TESTFLAGS="$TESTFLAGS -check.v"
+	go_test_dir ./integration
+}
+
+# subshell so that we can export PATH without breaking other things
+(
+	make bin/skopeo ${BUILDTAGS:+BUILDTAGS="$BUILDTAGS"}
+	make PREFIX=/usr install
+	bundle_test_integration
+) 2>&1

hack/make/test-system

@@ -0,0 +1,18 @@
+#!/bin/bash
+set -e
+
+# Before running podman for the first time, make sure
+# to set storage to vfs (not overlay): podman-in-podman
+# doesn't work with overlay. And, disable mountopt,
+# which causes error with vfs.
+sed -i \
+    -e 's/^driver\s*=.*/driver = "vfs"/' \
+    -e 's/^mountopt/#mountopt/' \
+    /etc/containers/storage.conf
+
+# Build skopeo, install into /usr/bin
+make bin/skopeo ${BUILDTAGS:+BUILDTAGS="$BUILDTAGS"}
+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 $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/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
+# Installing from packages
 
 ## 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
 
@@ -10,26 +9,34 @@ 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.
+Newer Skopeo releases may be available on the repositories provided by the
+Kubic project. Beware, these may not be suitable for production environments.
 
-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)
+on CentOS 8:
 
-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)
+```sh
+sudo dnf -y module disable container-tools
+sudo dnf -y install 'dnf-command(copr)'
+sudo dnf -y copr enable rhcontainerbot/container-selinux
+sudo curl -L -o /etc/yum.repos.d/devel:kubic:libcontainers:stable.repo https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/CentOS_8/devel:kubic:libcontainers:stable.repo
+sudo dnf -y install skopeo
+```
 
+on CentOS 8 Stream:
+
+```sh
+sudo dnf -y module disable container-tools
+sudo dnf -y install 'dnf-command(copr)'
+sudo dnf -y copr enable rhcontainerbot/container-selinux
+sudo curl -L -o /etc/yum.repos.d/devel:kubic:libcontainers:stable.repo https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/CentOS_8_Stream/devel:kubic:libcontainers:stable.repo
+sudo dnf -y install skopeo
+```
 
 ### RHEL/CentOS ≤ 7.x
 
@@ -37,40 +44,18 @@ CentOS Stream 8: [Package Info](https://git.centos.org/rpms/skopeo/tree/c8s-stre
 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
@@ -82,21 +67,18 @@ 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),
-and Debian Testing and Unstable.
+The skopeo package is available in
+the [Bullseye (testing) branch](https://packages.debian.org/bullseye/skopeo), which
+will be the next stable release (Debian 11) as well as Debian Unstable/Sid.
 
 ```bash
-# Debian Bullseye, Testing or Unstable/Sid
+# Debian Testing/Bullseye or Unstable/Sid
 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,
@@ -115,35 +97,37 @@ sudo apt-get -y update
 sudo apt-get -y install skopeo
 ```
 
-[Package Info](https://packages.ubuntu.com/jammy/skopeo)
+If you would prefer newer (though not as well-tested) packages,
+the [Kubic project](https://build.opensuse.org/package/show/devel:kubic:libcontainers:stable/skopeo)
+provides packages for active Ubuntu releases 20.04 and newer (it should also work with direct derivatives like Pop!\_OS).
+Checkout the [Kubic project page](https://build.opensuse.org/package/show/devel:kubic:libcontainers:stable/skopeo)
+for a list of supported Ubuntu version and
+architecture combinations. **NOTE:** The command `sudo apt-get -y upgrade`
+maybe required in some cases if Skopeo cannot be installed without it.
+The build sources for the Kubic packages can be found [here](https://gitlab.com/rhcontainerbot/skopeo/-/tree/debian/debian).
 
-### 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`.
-For example,
+CAUTION: On Ubuntu 20.10 and newer, we highly recommend you use Buildah, Podman and Skopeo ONLY from EITHER the Kubic repo
+OR the official Ubuntu repos. Mixing and matching may lead to unpredictable situations including installation conflicts.
 
 ```bash
-podman run docker://quay.io/skopeo/stable:latest copy --help
+. /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
 ```
 
-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)
-
-
-## Building from Source
 
 Otherwise, read on for building and installing it from source:
 
-To build the `skopeo` binary you need at least Go 1.19.
+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.
 
+## Building from Source
+
 ### Building without a container
 
 Building without a container requires a bit more manual work and setup in your
@@ -175,11 +159,6 @@ brew install gpgme
 sudo zypper install libgpgme-devel device-mapper-devel libbtrfs-devel glib2-devel
 ```
 
-```bash
-# Arch Linux:
-sudo pacman -S base-devel gpgme device-mapper btrfs-progs
-```
-
 Make sure to clone this repository in your `GOPATH` - otherwise compilation fails.
 
 ```bash
@@ -195,22 +174,6 @@ 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 +212,6 @@ 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:
@@ -263,34 +219,3 @@ Finally, after the binary and documentation is built:
 ```bash
 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` 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.
-
-Keep in mind that the resulting binary is unsupported and might crash randomly. Only use if you know what you're doing!
-
-For more information, history, and context about static builds, check the following issues:
-
-- [#391] - Consider distributing statically built binaries as part of release
-- [#669] - Static build fails with segmentation violation
-- [#670] - Fixing static binary build using container
-- [#755] - Remove static and in-container targets from Makefile
-- [#932] - Add nix derivation for static builds
-- [#1336] - Unable to run skopeo on Fedora 30 (due to dyn lib dependency)
-- [#1478] - Publish binary releases to GitHub (request+discussion)
-
-[#391]: https://github.com/containers/skopeo/issues/391
-[#669]: https://github.com/containers/skopeo/issues/669
-[#670]: https://github.com/containers/skopeo/issues/670
-[#755]: https://github.com/containers/skopeo/issues/755
-[#932]: https://github.com/containers/skopeo/issues/932
-[#1336]: https://github.com/containers/skopeo/issues/1336
-[#1478]: https://github.com/containers/skopeo/issues/1478

integration/blocked_test.go

@@ -1,34 +1,34 @@
 package main
 
+import (
+	"github.com/go-check/check"
+)
+
 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"
+	"github.com/go-check/check"
 )
 
 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"
+	"github.com/go-check/check"
 )
 
 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"
+	"github.com/go-check/check"
 )
 
 /*
@@ -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

@@ -1,12 +0,0 @@
-//go:build !linux
-// +build !linux
-
-package main
-
-import (
-	"os/exec"
-)
-
-// cmdLifecycleToParentIfPossible tries to exit if the parent process exits (only works on Linux).
-func cmdLifecycleToParentIfPossible(c *exec.Cmd) {
-}

integration/procutils_linux.go

@@ -1,14 +0,0 @@
-package main
-
-import (
-	"os/exec"
-	"syscall"
-)
-
-// cmdLifecyleToParentIfPossible is a thin wrapper around prctl(PR_SET_PDEATHSIG)
-// on Linux.
-func cmdLifecycleToParentIfPossible(c *exec.Cmd) {
-	c.SysProcAttr = &syscall.SysProcAttr{
-		Pdeathsig: syscall.SIGTERM,
-	}
-}

integration/proxy_test.go

@@ -1,357 +0,0 @@
-package main
-
-import (
-	"encoding/json"
-	"fmt"
-	"io"
-	"net"
-	"os"
-	"os/exec"
-	"strings"
-	"syscall"
-	"testing"
-	"time"
-
-	"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 expectedProxySemverMajor = "0.2"
-
-// request is copied from proxy.go
-// We intentionally copy to ensure that we catch any unexpected "API" changes
-// in the JSON.
-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"`
-}
-
-// reply is copied from proxy.go
-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"`
-	// 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
-	Error string `json:"error"`
-}
-
-// maxMsgSize is also copied from proxy.go
-const maxMsgSize = 32 * 1024
-
-type proxy struct {
-	c *net.UnixConn
-}
-
-type pipefd struct {
-	// id is the remote identifier "pipeid"
-	id uint
-	fd *os.File
-}
-
-func (p *proxy) call(method string, args []any) (rval any, fd *pipefd, err error) {
-	req := request{
-		Method: method,
-		Args:   args,
-	}
-	reqbuf, err := json.Marshal(&req)
-	if err != nil {
-		return
-	}
-	n, err := p.c.Write(reqbuf)
-	if err != nil {
-		return
-	}
-	if n != len(reqbuf) {
-		err = fmt.Errorf("short write during call of %d bytes", n)
-		return
-	}
-	oob := make([]byte, syscall.CmsgSpace(1))
-	replybuf := make([]byte, maxMsgSize)
-	n, oobn, _, _, err := p.c.ReadMsgUnix(replybuf, oob)
-	if err != nil {
-		err = fmt.Errorf("reading reply: %w", err)
-		return
-	}
-	var reply reply
-	err = json.Unmarshal(replybuf[0:n], &reply)
-	if err != nil {
-		err = fmt.Errorf("Failed to parse reply: %w", err)
-		return
-	}
-	if !reply.Success {
-		err = fmt.Errorf("remote error: %s", reply.Error)
-		return
-	}
-
-	if reply.PipeID > 0 {
-		var scms []syscall.SocketControlMessage
-		scms, err = syscall.ParseSocketControlMessage(oob[:oobn])
-		if err != nil {
-			err = fmt.Errorf("failed to parse control message: %w", err)
-			return
-		}
-		if len(scms) != 1 {
-			err = fmt.Errorf("Expected 1 received fd, found %d", len(scms))
-			return
-		}
-		var fds []int
-		fds, err = syscall.ParseUnixRights(&scms[0])
-		if err != nil {
-			err = fmt.Errorf("failed to parse unix rights: %w", err)
-			return
-		}
-		fd = &pipefd{
-			fd: os.NewFile(uintptr(fds[0]), "replyfd"),
-			id: uint(reply.PipeID),
-		}
-	}
-
-	rval = reply.Value
-	return
-}
-
-func (p *proxy) callNoFd(method string, args []any) (rval any, err error) {
-	var fd *pipefd
-	rval, fd, err = p.call(method, args)
-	if err != nil {
-		return
-	}
-	if fd != nil {
-		err = fmt.Errorf("Unexpected fd from method %s", method)
-		return
-	}
-	return rval, nil
-}
-
-func (p *proxy) callReadAllBytes(method string, args []any) (rval any, buf []byte, err error) {
-	var fd *pipefd
-	rval, fd, err = p.call(method, args)
-	if err != nil {
-		return
-	}
-	if fd == nil {
-		err = fmt.Errorf("Expected fd from method %s", method)
-		return
-	}
-	fetchchan := make(chan byteFetch)
-	go func() {
-		manifestBytes, err := io.ReadAll(fd.fd)
-		fetchchan <- byteFetch{
-			content: manifestBytes,
-			err:     err,
-		}
-	}()
-	_, err = p.callNoFd("FinishPipe", []any{fd.id})
-	if err != nil {
-		return
-	}
-	select {
-	case fetchRes := <-fetchchan:
-		err = fetchRes.err
-		if err != nil {
-			return
-		}
-
-		buf = fetchRes.content
-	case <-time.After(5 * time.Minute):
-		err = fmt.Errorf("timed out during proxy fetch")
-	}
-	return
-}
-
-func newProxy() (*proxy, error) {
-	fds, err := syscall.Socketpair(syscall.AF_LOCAL, syscall.SOCK_SEQPACKET, 0)
-	if err != nil {
-		return nil, err
-	}
-	myfd := os.NewFile(uintptr(fds[0]), "myfd")
-	defer myfd.Close()
-	theirfd := os.NewFile(uintptr(fds[1]), "theirfd")
-	defer theirfd.Close()
-
-	mysock, err := net.FileConn(myfd)
-	if err != nil {
-		return nil, err
-	}
-
-	// Note ExtraFiles starts at 3
-	proc := exec.Command("skopeo", "experimental-image-proxy", "--sockfd", "3")
-	proc.Stderr = os.Stderr
-	cmdLifecycleToParentIfPossible(proc)
-	proc.ExtraFiles = append(proc.ExtraFiles, theirfd)
-
-	if err = proc.Start(); err != nil {
-		return nil, err
-	}
-
-	p := &proxy{
-		c: mysock.(*net.UnixConn),
-	}
-
-	v, err := p.callNoFd("Initialize", nil)
-	if err != nil {
-		return nil, err
-	}
-	semver, ok := v.(string)
-	if !ok {
-		return nil, fmt.Errorf("proxy Initialize: Unexpected value %T", v)
-	}
-	if !strings.HasPrefix(semver, expectedProxySemverMajor) {
-		return nil, fmt.Errorf("Unexpected semver %s", semver)
-	}
-	return p, nil
-}
-
-func TestProxy(t *testing.T) {
-	suite.Run(t, &proxySuite{})
-}
-
-type proxySuite struct {
-	suite.Suite
-}
-
-type byteFetch struct {
-	content []byte
-	err     error
-}
-
-func runTestGetManifestAndConfig(p *proxy, img string) error {
-	v, err := p.callNoFd("OpenImage", []any{img})
-	if err != nil {
-		return err
-	}
-
-	imgidv, ok := v.(float64)
-	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")
-	}
-
-	// 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})
-	if err != nil {
-		return err
-	}
-	_, err = manifest.OCI1FromManifest(manifestBytes)
-	if err != nil {
-		return err
-	}
-
-	_, configBytes, err := p.callReadAllBytes("GetFullConfig", []any{imgid})
-	if err != nil {
-		return err
-	}
-	var config imgspecv1.Image
-	err = json.Unmarshal(configBytes, &config)
-	if err != nil {
-		return err
-	}
-
-	// Validate that the image config seems sane
-	if config.Architecture == "" {
-		return fmt.Errorf("No architecture found")
-	}
-	if len(config.Config.Cmd) == 0 && len(config.Config.Entrypoint) == 0 {
-		return fmt.Errorf("No CMD or ENTRYPOINT set")
-	}
-
-	// Also test this legacy interface
-	_, ctrconfigBytes, err := p.callReadAllBytes("GetConfig", []any{imgid})
-	if err != nil {
-		return err
-	}
-	var ctrconfig imgspecv1.ImageConfig
-	err = json.Unmarshal(ctrconfigBytes, &ctrconfig)
-	if err != nil {
-		return err
-	}
-
-	// Validate that the config seems sane
-	if len(ctrconfig.Cmd) == 0 && len(ctrconfig.Entrypoint) == 0 {
-		return fmt.Errorf("No CMD or ENTRYPOINT set")
-	}
-
-	_, err = p.callNoFd("CloseImage", []any{imgid})
-	if err != nil {
-		return err
-	}
-
-	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()
-	p, err := newProxy()
-	require.NoError(t, err)
-
-	err = runTestGetManifestAndConfig(p, knownNotManifestListedImageX8664)
-	if err != nil {
-		err = fmt.Errorf("Testing image %s: %v", knownNotManifestListedImageX8664, err)
-	}
-	assert.NoError(t, err)
-
-	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)
-}

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"
+	"github.com/go-check/check"
 )
 
 const (
@@ -20,14 +20,15 @@ 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 i := 0; i != 50; i++ {
@@ -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)
 }