feat: enhance release workflow with multi-platform support

.github/workflows/release.yml

@@ -7,28 +7,35 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - platform: linux/amd64
+            runner: ubuntu-24.04
+          - platform: linux/arm64
+            runner: ubuntu-24.04-arm
+    runs-on: ${{ matrix.runner }}
     permissions:
-      contents: write
+      contents: read
       packages: write
 
     steps:
-      - uses: actions/checkout@v3
+      - name: Prepare platform pair
+        run: |
+          platform=${{ matrix.platform }}
+          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
+
+      - uses: actions/checkout@v6
 
       - name: Extract version from tag
         id: version
         run: echo "VERSION=${GITHUB_REF_NAME#v}" >> $GITHUB_OUTPUT
 
       - uses: docker/metadata-action@v5
-        name: Docker meta
         id: meta
         with:
-          images: |
-            ghcr.io/${{ github.repository }}
-          tags: |
-            type=raw,value=latest
-            type=semver,pattern={{major}}.{{minor}}.{{patch}}
-            type=raw,value=${{ github.ref_name }}
+          images: ghcr.io/${{ github.repository }}
 
       - uses: docker/setup-buildx-action@v3
 
@@ -38,19 +45,73 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Build and push
-        uses: docker/build-push-action@v6
+      - name: Build and push by digest
+        id: build
+        uses: docker/build-push-action@v7
         with:
           context: .
-          platforms: linux/amd64,linux/arm64
-          push: true
-          tags: ${{ steps.meta.outputs.tags }}
+          platforms: ${{ matrix.platform }}
           labels: ${{ steps.meta.outputs.labels }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+          outputs: type=image,name=ghcr.io/${{ github.repository }},push-by-digest=true,name-canonical=true,push=true
+          cache-from: type=gha,scope=${{ env.PLATFORM_PAIR }}
+          cache-to: type=gha,mode=max,scope=${{ env.PLATFORM_PAIR }}
           build-args: |
             VERSION=${{ steps.version.outputs.VERSION }}
 
+      - name: Export digest
+        run: |
+          mkdir -p ${{ runner.temp }}/digests
+          digest="${{ steps.build.outputs.digest }}"
+          touch "${{ runner.temp }}/digests/${digest#sha256:}"
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: digests-${{ env.PLATFORM_PAIR }}
+          path: ${{ runner.temp }}/digests/*
+          if-no-files-found: error
+          retention-days: 1
+
+  merge:
+    runs-on: ubuntu-24.04
+    needs: build
+    permissions:
+      contents: write
+      packages: write
+
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          path: ${{ runner.temp }}/digests
+          pattern: digests-*
+          merge-multiple: true
+
+      - uses: docker/setup-buildx-action@v3
+
+      - uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: docker/metadata-action@v5
+        id: meta
+        with:
+          images: ghcr.io/${{ github.repository }}
+          tags: |
+            type=raw,value=latest
+            type=semver,pattern={{major}}.{{minor}}.{{patch}}
+            type=raw,value=${{ github.ref_name }}
+
+      - name: Create manifest list and push
+        working-directory: ${{ runner.temp }}/digests
+        run: |
+          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
+            $(printf 'ghcr.io/${{ github.repository }}@sha256:%s ' *)
+
+      - name: Inspect image
+        run: |
+          docker buildx imagetools inspect ghcr.io/${{ github.repository }}:${{ steps.meta.outputs.version }}
+
       - name: Create GitHub Release
         uses: softprops/action-gh-release@v2
         with: