Build-image #228
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| --- | |
| name: Build-image | |
| on: | |
| pull_request: | |
| branches: | |
| - main | |
| schedule: | |
| - cron: '00 20 * * *' # 20:00 UTC everyday (2 hours after secureblue images start to build). | |
| push: | |
| branches: | |
| - main | |
| paths-ignore: | |
| - '**/README.md' | |
| workflow_dispatch: | |
| env: | |
| MY_IMAGE_NAME: "${{ github.event.repository.name }}" # The name of the image | |
| MY_IMAGE_DESC: "A custom image designed for school and work environments" | |
| IMAGE_REGISTRY: "ghcr.io/${{ github.repository_owner }}" | |
| jobs: | |
| build_push: | |
| name: Build and push image | |
| runs-on: ubuntu-latest | |
| permissions: | |
| contents: read | |
| packages: write | |
| id-token: write | |
| steps: | |
| # Checkout push-to-registry action GitHub repository | |
| - name: Checkout Push to Registry action | |
| uses: actions/checkout@v4 | |
| - name: Generate tags | |
| id: generate-tags | |
| shell: bash | |
| run: | | |
| # Generate a timestamp for creating an image version history | |
| TIMESTAMP="$(date +%Y%m%d)" | |
| COMMIT_TAGS=() | |
| BUILD_TAGS=() | |
| # Have tags for tracking builds during pull request | |
| SHA_SHORT="${GITHUB_SHA::7}" | |
| COMMIT_TAGS+=("pr-${{ github.event.number }}") | |
| COMMIT_TAGS+=("${SHA_SHORT}") | |
| # Append matching timestamp tags to keep a version history | |
| for TAG in "${BUILD_TAGS[@]}"; do | |
| BUILD_TAGS+=("${TAG}-${TIMESTAMP}") | |
| done | |
| BUILD_TAGS+=("${TIMESTAMP}") | |
| BUILD_TAGS+=("latest") | |
| BUILD_TAGS+=("40") | |
| if [[ "${{ github.event_name }}" == "pull_request" ]]; then | |
| echo "Generated the following commit tags: " | |
| for TAG in "${COMMIT_TAGS[@]}"; do | |
| echo "${TAG}" | |
| done | |
| alias_tags=("${COMMIT_TAGS[@]}") | |
| else | |
| alias_tags=("${BUILD_TAGS[@]}") | |
| fi | |
| echo "Generated the following build tags: " | |
| for TAG in "${BUILD_TAGS[@]}"; do | |
| echo "${TAG}" | |
| done | |
| echo "alias_tags=${alias_tags[*]}" >> $GITHUB_OUTPUT | |
| # Build metadata | |
| - name: Image Metadata | |
| uses: docker/metadata-action@v5 | |
| id: meta | |
| with: | |
| images: | | |
| ${{ env.MY_IMAGE_NAME }} | |
| labels: | | |
| io.artifacthub.package.readme-url=https://raw.githubusercontent.com/${{ github.repository }}/main/README.md | |
| org.opencontainers.image.description=${{ env.MY_IMAGE_DESC }} | |
| org.opencontainers.image.title=${{ env.MY_IMAGE_NAME }} | |
| # Build image using Buildah action | |
| - name: Build Image | |
| id: build_image | |
| uses: redhat-actions/buildah-build@v2 | |
| with: | |
| containerfiles: | | |
| ./Containerfile | |
| # Postfix image name with -custom to make it a little more descriptive | |
| # Syntax: https://docs.github.com/en/actions/learn-github-actions/expressions#format | |
| image: ${{ env.MY_IMAGE_NAME }} | |
| tags: | | |
| ${{ steps.generate-tags.outputs.alias_tags }} | |
| labels: ${{ steps.meta.outputs.labels }} | |
| oci: false | |
| # Workaround bug where capital letters in your GitHub username make it impossible to push to GHCR. | |
| # https://github.com/macbre/push-to-ghcr/issues/12 | |
| - name: Lowercase Registry | |
| id: registry_case | |
| uses: ASzc/change-string-case-action@v6 | |
| with: | |
| string: ${{ env.IMAGE_REGISTRY }} | |
| - name: Login to GitHub Container Registry | |
| uses: docker/#-action@v3 | |
| with: | |
| registry: ghcr.io | |
| username: ${{ github.actor }} | |
| password: ${{ secrets.GITHUB_TOKEN }} | |
| - name: Push Image to GHCR | |
| uses: redhat-actions/push-to-registry@v2 | |
| id: push | |
| env: | |
| REGISTRY_USER: ${{ github.actor }} | |
| REGISTRY_PASSWORD: ${{ github.token }} | |
| with: | |
| image: ${{ steps.build_image.outputs.image }} | |
| tags: ${{ steps.build_image.outputs.tags }} | |
| registry: ${{ steps.registry_case.outputs.lowercase }} | |
| username: ${{ env.REGISTRY_USER }} | |
| password: ${{ env.REGISTRY_PASSWORD }} | |
| extra-args: | | |
| --disable-content-trust | |
| # Sign container | |
| - uses: sigstore/cosign-installer@v3.7.0 | |
| if: github.event_name != 'pull_request' | |
| - name: Sign container image | |
| if: github.event_name != 'pull_request' | |
| run: | | |
| cosign sign -y --key env://COSIGN_PRIVATE_KEY ${{ steps.registry_case.outputs.lowercase }}/${{ steps.build_image.outputs.image }}@${TAGS} | |
| env: | |
| TAGS: ${{ steps.push.outputs.digest }} | |
| COSIGN_EXPERIMENTAL: false | |
| COSIGN_PRIVATE_KEY: ${{ secrets.SIGNING_SECRET }} |