workflow

.github/workflows/docker-publish.yml

+name: Docker
+
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+on:
+  push:
+    branches: [ "main" ]
+    # Publish semver tags as releases.
+    tags: [ 'v*.*.*' ]
+  pull_request:
+    branches: [ "main" ]
+
+env:
+  # Use docker.io for Docker Hub if empty
+  REGISTRY: ghcr.io
+  # github.repository as <account>/<repo>
+  IMAGE_NAME: ${{ github.repository }}
+
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      # This is used to complete the identity challenge
+      # with sigstore/fulcio when running outside of PRs.
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      # Workaround: https://github.com/docker/build-push-action/issues/461
+      - name: Setup Docker buildx
+        uses: docker/setup-buildx-action@v2
+
+      # 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@v2
+        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@v4
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=ref,event=branch,prefix=,suffix=-{{sha}}-{{date 'x'}}
+
+      # Cache dependencies
+      # https://github.com/actions/cache
+      - name: Cache Docker layers
+        uses: actions/cache@v3
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-multi-buildx-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-multi-buildx
+
+      # 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@v4
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=local,src=/tmp/.buildx-cache
+          # Note the mode=max here
+          # More: https://github.com/moby/buildkit#--export-cache-options
+          # And: https://github.com/docker/buildx#--cache-tonametypetypekeyvalue
+          cache-to: type=local,mode=max,dest=/tmp/.buildx-cache-new
+
+      # Temp fix / Disabled on self-hosted runner
+      # https://github.com/docker/build-push-action/issues/252
+      # https://github.com/moby/buildkit/issues/1896
+      - name: Move cache
+        run: |
+          rm -rf /tmp/.buildx-cache
+          mv /tmp/.buildx-cache-new /tmp/.buildx-cache
+
+
+      # # Install the cosign tool except on PR
+      # # https://github.com/sigstore/cosign-installer
+      # - name: Install cosign
+      #   if: github.event_name != 'pull_request'
+      #   uses: sigstore/cosign-installer@v3.3.0
+      #   with:
+      #     cosign-release: 'v2.2.2'
+
+      # # 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: ${{ github.event_name != 'pull_request' }}
+      #   env:
+      #     COSIGN_EXPERIMENTAL: "true"
+      #   # This step uses the identity token to provision an ephemeral certificate
+      #   # against the sigstore community Fulcio instance.
+      #   run: echo "${{ steps.meta.outputs.tags }}" | xargs -I {} cosign sign {}@${{ steps.build-and-push.outputs.digest }}