Refactor Docker build workflow for consistency

Author: baseplate-admin

.github/workflows/docker-build-backend.yml

@@ -31,20 +31,17 @@ jobs:
         include:
           - os: ubuntu-latest
             platform: linux/amd64
-          - os: ubuntu-24.04-arm 
+          - os: ubuntu-24.04-arm
             platform: linux/arm64
 
     steps:
-      - name: Checkout
-        uses: actions/checkout@v6
+      - uses: actions/checkout@v6
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v4
+      - uses: docker/setup-buildx-action@v4
         with:
           driver: docker-container
 
-      - name: Log in to GHCR
-        uses: docker/login-action@v4
+      - uses: docker/login-action@v4
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
@@ -60,7 +57,6 @@ jobs:
             org.opencontainers.image.description=Backend build for ${{ github.repository }} (${{ github.ref_name }})
             org.opencontainers.image.source=https://github.com/${{ github.repository }}
             org.opencontainers.image.revision=${{ github.sha }}
-            org.opencontainers.image.licenses=MIT
 
       - name: Build and push by digest
         id: build
@@ -74,12 +70,11 @@ jobs:
         run: |
           mkdir -p /tmp/digests
           digest="${{ steps.build.outputs.digest }}"
-          touch "/tmp/digests/${digest//sha256:/}"
+          touch "/tmp/digests/${digest#sha256:}"
 
-      - name: Upload digest
-        uses: actions/upload-artifact@v7
+      - uses: actions/upload-artifact@v7
         with:
-          name: digests-${{ strategy.job-index }}
+          name: digests-${{ matrix.platform == 'linux/amd64' && 'amd64' || 'arm64' }}
           path: /tmp/digests/*
           if-no-files-found: error
           retention-days: 1
@@ -90,15 +85,13 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/v')
 
     steps:
-      - name: Download digests
-        uses: actions/download-artifact@v8
+      - uses: actions/download-artifact@v8
         with:
           path: /tmp/digests
           pattern: digests-*
           merge-multiple: true
 
-      - name: Log in to GHCR
-        uses: docker/login-action@v4
+      - uses: docker/login-action@v4
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
@@ -114,20 +107,14 @@ jobs:
             type=semver,pattern={{version}}
             type=raw,value=latest,enable=${{ github.event_name == 'release' || startsWith(github.ref, 'refs/tags/v') }}
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v4
+      - uses: docker/setup-buildx-action@v4
 
       - name: Create manifest list and push
         working-directory: /tmp/digests
         run: |
-          TAG_ARGS=$(echo "${{ steps.meta.outputs.tags }}" | xargs -I {} echo "-t {}")
+          TAG_ARGS=$(echo "${{ steps.meta.outputs.tags }}" | sort -u | xargs -I {} echo "-t {}")
           DIGEST_ARGS=$(printf '${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@sha256:%s ' *)
 
           docker buildx imagetools create \
             $TAG_ARGS \
-            --annotation org.opencontainers.image.title="Backend Image" \
-            --annotation org.opencontainers.image.description="Backend build for ${{ github.repository }} (${{ github.ref_name }})" \
-            --annotation org.opencontainers.image.source="https://github.com/${{ github.repository }}" \
-            --annotation org.opencontainers.image.revision="${{ github.sha }}" \
-            --annotation org.opencontainers.image.licenses="MIT" \
             $DIGEST_ARGS