Merge pull request #4 from aosus/master

Build Docker image for ARM64 and ARMv7

.github/workflows/docker.yml

@@ -1,42 +1,103 @@
-name: Create and publish a Docker image
+name: Build Docker image
+
+# 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:
+    branches: [ master ]
-      - master
+    # Publish semver tags as releases.
+    tags: [ 'v*.*.*' ]
+  pull_request:
+    branches: [ master ]
+  workflow_dispatch:
 
 env:
+  # Use docker.io for Docker Hub if empty
   REGISTRY: ghcr.io
+  # github.repository as <account>/<repo>
   IMAGE_NAME: ${{ github.repository }}
 
+
 jobs:
-  build-and-push-image:
+  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
 
-      - name: Log in to the Container registry
+      - name: Setup QEMU
-        uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
+        uses: docker/setup-qemu-action@v2
+
+      # 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@main
+        with:
+          cosign-release: 'v1.9.0'
+
+
+      # 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 }}
 
-      - name: Extract metadata (tags, labels) for Docker
+      # Extract metadata (tags, labels) for Docker
+      # https://github.com/docker/metadata-action
+      - name: Extract Docker metadata
         id: meta
-        uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
+        uses: docker/metadata-action@v3
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
 
+      # Build and push Docker image with Buildx (don't push on PR)
+      # https://github.com/docker/build-push-action
+      - name: Set some variables for the image
+        run: |
+          echo "IMAGE_VERSION=${GITHUB_REF_NAME#v}" >> $GITHUB_ENV
+          echo "IMAGE_NAME=${GITHUB_REPOSITORY,,}" >> $GITHUB_ENV
       - name: Build and push Docker image
-        uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
+        id: build-and-push
+        uses: docker/build-push-action@v2
         with:
           context: .
-          push: true
+          platforms: linux/amd64,linux/arm64, linux/arm/v7
-          tags: ${{ steps.meta.outputs.tags }}
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: |
+            ghcr.io/${{ env.IMAGE_NAME }}:latest
+            ghcr.io/${{ env.IMAGE_NAME }}:${{ env.IMAGE_VERSION }}
           labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+      # 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: cosign sign ${{ steps.meta.outputs.tags }}@${{ steps.build-and-push.outputs.digest }}