update: docker-publish.yml

.github/workflows/docker-publish.yml

@@ -37,31 +37,23 @@ jobs:
         uses: docker/setup-qemu-action@v3
 
       - name: Install cosign
-        if: github.event_name != 'pull_request'
-        uses: sigstore/cosign-installer@6e04d228eb30da1757ee4e1dd75a0ec73a653e06 #v3.1.1
-        with:
-          cosign-release: 'v2.1.1'
-      # Set up BuildKit Docker container builder to be able to build
-      # multi-platform images and export cache
-      # https://github.com/docker/setup-buildx-action
+        uses: sigstore/cosign-installer@v3.4.0
+
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@f95db51fddba0c2d1ec667646a06c2ce06100226 # v3.0.0
+        uses: docker/setup-buildx-action@v3.2.0
 
       # Login against a Docker registry except on PR
       # https://github.com/docker/login-action
       - name: Log into registry ${{ env.REGISTRY }}
-        if: github.event_name != 'pull_request'
-        uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0
+        uses: docker/login-action@v3.1.0
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      # Extract metadata (tags, labels) for Docker
-      # https://github.com/docker/metadata-action
       - name: Extract Docker metadata
         id: meta
-        uses: docker/metadata-action@96383f45573cb7f253c731d3b3ab81c87ef81934 # v5.0.0
+        uses: docker/metadata-action@v5.5.1
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
       
@@ -69,24 +61,34 @@ jobs:
         id: get_version
         run: echo "version=$(git describe --tags --always)" >> $GITHUB_OUTPUT
 
-      # Build and push Docker image with Buildx (don't push on PR)
-      # https://github.com/docker/build-push-action
       - name: Build and push Docker image
         id: build-and-push
-        uses: docker/build-push-action@0565240e2d4ab88bba5387d719585280857ece09 # v5.0.0
+        uses: docker/build-push-action@v5.3.0
         with:
           context: .
           push: true
           platforms: linux/amd64,linux/arm64
           tags: ${{ env.REGISTRY }}/${{ github.repository_owner }}/xboard:latest,${{ env.REGISTRY }}/${{ github.repository_owner }}/xboard,${{ env.REGISTRY }}/${{ github.repository_owner }}/xboard:${{ steps.get_version.outputs.version }}
 
+      # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
+      - name: Sign image with a key
+        run: |
+          images=""
+          for tag in ${TAGS}; do
+            images+="${tag}@${DIGEST} "
+          done
+          cosign sign --yes --key env://COSIGN_PRIVATE_KEY ${images}
+        env:
+          TAGS: ${{ steps.meta.outputs.tags }}
+          COSIGN_PRIVATE_KEY: ${{ secrets.COSIGN_PRIVATE_KEY }}
+          COSIGN_PASSWORD: ${{ secrets.COSIGN_PASSWORD }}
+          DIGEST: ${{ steps.build-and-push.outputs.digest }}
       # Sign the resulting Docker image digest except on PRs.
       # This will only write to the public Rekor transparency log when the Docker
       # repository is public to avoid leaking data.  If you would like to publish
       # transparency data even for private images, pass --force to cosign below.
       # https://github.com/sigstore/cosign
       - name: Sign the published Docker image
-        if: ${{ github.event_name != 'pull_request' }}
         env:
           # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
           TAGS: ${{ steps.meta.outputs.tags }}