gha: ci: Avoid using env unless it's really needed

de83cd9de7 tried to solve an issue, but it
clearly seems that I'm using env wrongly, as what ended up being passed
as input was "$VAR", instead of the content of the VAR variable.

As we can simply avoid using those here, let's do it and save us a
headache.

Fixes: #7247

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

.github/workflows/ci-nightly.yaml

@@ -3,9 +3,6 @@ on:
   schedule:
     - cron: '0 0 * * *'
 
-env:
-  COMMIT_HASH: ${GITHUB_REF}
-
 jobs:
   set-fake-pr-number:
     runs-on: ubuntu-latest
@@ -18,6 +15,6 @@ jobs:
     needs: set-fake-pr-number
     uses: ./.github/workflows/ci.yaml
     with:
-      commit-hash: $COMMIT_HASH
-      pr-number: $PR_NUMBER
-      tag: $PR_NUMBER-$COMMIT_HASH-nightly
+      commit-hash: ${GITHUB_REF}
+      pr-number: ${PR_NUMBER}
+      tag: ${PR_NUMBER}-${GITHUB_REF}-nightly

.github/workflows/ci-on-push.yaml

@@ -12,15 +12,11 @@ on:
       - synchronize
       - reopened
       - labeled
-env:
-  COMMIT_HASH: ${{ github.event.pull_request.head.sha }}
-  PR_NUMBER: ${{ github.event.pull_request.number }}
-
 jobs:
   kata-containers-ci-on-push:
     if: ${{ contains(github.event.pull_request.labels.*.name, 'ok-to-test') }}
     uses: ./.github/workflows/ci.yaml
     with:
-      commit-hash: $COMMIT_HASH
-      pr-number: $PR_NUMBER
-      tag: $PR_NUMBER-$COMMIT_HASH
+      commit-hash: ${{ github.event.pull_request.sha }}
+      pr-number: ${{ github.event.pull_request.number }}
+      tag: ${{ github.event.pull_request.number }}-${{ github.event.pull_request.head.sha }}

.github/workflows/payload-after-push.yaml

@@ -5,28 +5,25 @@ on:
       - main
       - stable-*
 
-env:
-  COMMIT_HASH: $GITHUB_REF
-
 jobs:
   build-assets-amd64:
     uses: ./.github/workflows/build-kata-static-tarball-amd64.yaml
     with:
-      commit-hash: $COMMIT_HASH
+      commit-hash: ${GITHUB_REF}
       push-to-registry: yes
     secrets: inherit
 
   build-assets-arm64:
     uses: ./.github/workflows/build-kata-static-tarball-arm64.yaml
     with:
-      commit-hash: $COMMIT_HASH
+      commit-hash: ${GITHUB_REF}
       push-to-registry: yes
     secrets: inherit
 
   build-assets-s390x:
     uses: ./.github/workflows/build-kata-static-tarball-s390x.yaml
     with:
-      commit-hash: $COMMIT_HASH
+      commit-hash: ${GITHUB_REF}
       push-to-registry: yes
     secrets: inherit
 
@@ -34,7 +31,7 @@ jobs:
     needs: build-assets-amd64
     uses: ./.github/workflows/publish-kata-deploy-payload-amd64.yaml
     with:
-      commit-hash: $COMMIT_HASH
+      commit-hash: ${GITHUB_REF}
       registry: quay.io
       repo: kata-containers/kata-deploy-ci
       tag: kata-containers-amd64
@@ -44,7 +41,7 @@ jobs:
     needs: build-assets-arm64
     uses: ./.github/workflows/publish-kata-deploy-payload-arm64.yaml
     with:
-      commit-hash: $COMMIT_HASH
+      commit-hash: ${GITHUB_REF}
       registry: quay.io
       repo: kata-containers/kata-deploy-ci
       tag: kata-containers-arm64
@@ -54,7 +51,7 @@ jobs:
     needs: build-assets-s390x
     uses: ./.github/workflows/publish-kata-deploy-payload-s390x.yaml
     with:
-      commit-hash: $COMMIT_HASH
+      commit-hash: ${GITHUB_REF}
       registry: quay.io
       repo: kata-containers/kata-deploy-ci
       tag: kata-containers-s390x