github: Build and publish Docker image on release #3
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| name: Build Docker image | |
| on: | |
| push: | |
| # Run on pull requests to verify that the image still builds correctly | |
| # The image is not pushed on pull requests | |
| pull_request: | |
| paths: | |
| - Dockerfile | |
| - .github/workflows/image.yml | |
| permissions: | |
| packages: write | |
| env: | |
| REGISTRY_IMAGE: ghcr.io/gohugoio/hugo | |
| jobs: | |
| build: | |
| runs-on: ubuntu-latest | |
| strategy: | |
| fail-fast: false | |
| matrix: | |
| platform: | |
| - linux/amd64 | |
| - linux/arm64 | |
| steps: | |
| - name: Prepare | |
| run: | | |
| platform=${{ matrix.platform }} | |
| echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV | |
| - name: Checkout | |
| uses: actions/[email protected] | |
| - name: Docker meta | |
| id: meta | |
| uses: docker/[email protected] | |
| with: | |
| images: ${{ env.REGISTRY_IMAGE }} | |
| - name: Set up QEMU | |
| uses: docker/[email protected] | |
| - name: Set up Docker Buildx | |
| uses: docker/[email protected] | |
| - name: Login to GHCR | |
| # Login is only needed when the image is pushed | |
| if: ${{ startsWith(github.ref, 'refs/tags') }} | |
| uses: docker/[email protected] | |
| with: | |
| registry: ghcr.io | |
| username: ${{ github.repository_owner }} | |
| password: ${{ secrets.GITHUB_TOKEN }} | |
| - name: Build and push by digest | |
| id: build | |
| uses: docker/[email protected] | |
| with: | |
| context: . | |
| push: ${{ startsWith(github.ref, 'refs/tags') }} | |
| platforms: ${{ matrix.platform }} | |
| labels: ${{ steps.meta.outputs.labels }} | |
| outputs: type=image,name=${{ env.REGISTRY_IMAGE }},push-by-digest=true,name-canonical=true,push=true | |
| - name: Export digest | |
| run: | | |
| mkdir -p /tmp/digests | |
| digest="${{ steps.build.outputs.digest }}" | |
| touch "/tmp/digests/${digest#sha256:}" | |
| - name: Upload digest | |
| uses: actions/[email protected] | |
| with: | |
| name: digests-${{ env.PLATFORM_PAIR }} | |
| path: /tmp/digests/* | |
| if-no-files-found: error | |
| retention-days: 1 | |
| merge: | |
| runs-on: ubuntu-latest | |
| needs: | |
| - build | |
| if: ${{ startsWith(github.ref, 'refs/tags') }} | |
| steps: | |
| - name: Download digests | |
| uses: actions/[email protected] | |
| with: | |
| path: /tmp/digests | |
| pattern: digests-* | |
| merge-multiple: true | |
| - name: Set up Docker Buildx | |
| uses: docker/[email protected] | |
| - name: Docker meta | |
| id: meta | |
| uses: docker/[email protected] | |
| with: | |
| images: ${{ env.REGISTRY_IMAGE }} | |
| flavor: | | |
| latest=false | |
| # Tag the image with the v-prefixed semver version on tags, tag with the ref on PRs | |
| tags: | | |
| type=semver,pattern={{raw}} | |
| type=ref,event=pr | |
| - name: Login to GHCR | |
| uses: docker/[email protected] | |
| with: | |
| registry: ghcr.io | |
| username: ${{ github.repository_owner }} | |
| password: ${{ secrets.GITHUB_TOKEN }} | |
| - name: Create manifest list and push | |
| working-directory: /tmp/digests | |
| run: | | |
| docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \ | |
| $(printf '${{ env.REGISTRY_IMAGE }}@sha256:%s ' *) | |
| - name: Inspect image | |
| run: | | |
| docker buildx imagetools inspect ${{ env.REGISTRY_IMAGE }}:${{ steps.meta.outputs.version }} |