File correction

Author: Ym0T

.github/workflows/docker-image.yml

@@ -5,12 +5,15 @@ on:
     - cron: '24 9 * * *'
   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:
@@ -19,7 +22,6 @@ jobs:
     strategy:
       matrix:
         php-version: [ '8.0', '8.1', '8.2', '8.3', '8.4' ] # PHP versions to build
-        architecture: [ 'amd64', 'arm64' ]  # Add architecture matrix
 
     permissions:
       contents: read
@@ -30,9 +32,18 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Set up BuildKit Docker container builder
+      # Install the cosign tool except on PR
+      - name: Install cosign
+        if: github.event_name != 'pull_request'
+        uses: sigstore/cosign-installer@59acb6260d9c0ba8f4a2f9d9b48431a222b68e20 #v3.5.0
+        with:
+          cosign-release: 'v2.2.4'
+
+      # Set up BuildKit Docker container builder
+      - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@f95db51fddba0c2d1ec667646a06c2ce06100226 # v3.0.0
 
+      # Login against a Docker registry except on PR
       - name: Log into registry ${{ env.REGISTRY }}
         if: github.event_name != 'pull_request'
         uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0
@@ -41,6 +52,7 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      # Extract metadata (tags, labels) for Docker
       - name: Extract Docker metadata
         id: meta
         uses: docker/metadata-action@96383f45573cb7f253c731d3b3ab81c87ef81934 # v5.0.0
@@ -50,7 +62,8 @@ jobs:
             ${{ matrix.php-version }}-${{ github.sha }}
             ${{ matrix.php-version }}-latest
             ${{ matrix.php-version }}
-          
+
+      # Build and push Docker image with Buildx (don't push on PR)
       - name: Build and push Docker image
         id: build-and-push
         uses: docker/build-push-action@0565240e2d4ab88bba5387d719585280857ece09 # v5.0.0
@@ -64,11 +77,11 @@ jobs:
           cache-to: type=gha,mode=max
           build-args: |
             PHP_VERSION=${{ matrix.php-version }}
-            ARCH=${{ matrix.architecture }}  # Pass architecture to Dockerfile
 
+      # Sign the resulting Docker image digest except on PRs.
       - name: Sign the published Docker image
         if: ${{ github.event_name != 'pull_request' }}
         env:
           TAGS: ${{ steps.meta.outputs.tags }}
           DIGEST: ${{ steps.build-and-push.outputs.digest }}
-        run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}
+        run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}