Use digest when signing. #46
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| name: Multiplatform Build with QEMU | |
| on: | |
| push: | |
| jobs: | |
| docker: | |
| permissions: # needed for signing and attestations | |
| id-token: write # write seems weird, but it is correct per docs | |
| attestations: write | |
| contents: read | |
| runs-on: ubuntu-latest | |
| steps: | |
| - | |
| name: Install Cosign | |
| uses: sigstore/cosign-installer@1aa8e0f2454b781fbf0fbf306a4c9533a0c57409 # v3.7.0 | |
| - | |
| name: Set up QEMU | |
| uses: docker/setup-qemu-action@v3 | |
| - | |
| name: Set up Docker Buildx | |
| uses: docker/setup-buildx-action@v3 | |
| - | |
| name: Login to Docker Hub | |
| uses: docker/login-action@v3 | |
| with: | |
| username: ${{ vars.DOCKERHUB_USER }} | |
| password: ${{ secrets.DOCKERHUB_TOKEN }} | |
| - | |
| name: Extract metadata (tags, labels) for Docker | |
| id: meta | |
| uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7 | |
| with: | |
| images: | | |
| amouat/images-bite-back-qemu | |
| labels: | | |
| org.opencontainers.image.description=Images Bite Back Demo QEMU Build | |
| - | |
| name: Build and push | |
| id: build | |
| uses: docker/build-push-action@v6 | |
| with: | |
| file: Dockerfile | |
| platforms: linux/amd64,linux/arm64 | |
| push: true | |
| sbom: true | |
| provenance: mode=max | |
| tags: ${{ steps.meta.outputs.tags }} | |
| labels: ${{ steps.meta.outputs.labels }} | |
| - | |
| name: Attest | |
| uses: actions/attest-build-provenance@92c65d2898f1f53cfdc910b962cecff86e7f8fcc # v1 | |
| id: attest | |
| with: | |
| subject-name: index.docker.io/${{ vars.DOCKERHUB_USER }}/images-bite-back-qemu | |
| subject-digest: ${{ steps.build.outputs.digest }} | |
| push-to-registry: true | |
| - | |
| name: Sign the images with GitHub OIDC Token | |
| env: | |
| DIGEST: ${{ steps.build.outputs.digest }} | |
| TAGS: ${{ steps.meta.outputs.tags }} | |
| run: | | |
| images="" | |
| for tag in ${TAGS}; do | |
| images+="${tag}@${DIGEST} " | |
| done | |
| cosign sign --yes ${images} |