chore: run docker builds in parallel

Author: glitchedmob

.github/workflows/docker-publish.yml

@@ -12,11 +12,14 @@ env:
   IMAGE_NAME: ${{ github.repository }}
 
 jobs:
-  build-and-push:
-    name: Build and Push Docker Image
+  build:
+    name: Build Docker Image (${{ matrix.platform }})
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        platform: [linux/amd64, linux/arm64]
     permissions:
-      contents: write
+      contents: read
       packages: write
     steps:
       - name: Checkout repository
@@ -32,21 +35,52 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Sanitize platform for tag
+        id: platform
+        run: |
+          PLATFORM_TAG=$(echo "${{ matrix.platform }}" | tr '/' '-')
+          echo "tag=$PLATFORM_TAG" >> $GITHUB_OUTPUT
+
       - name: Build and push Docker image
-        id: docker_build
         uses: docker/build-push-action@v5
         with:
           context: .
           push: true
           tags: |
-            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ inputs.version }}
-            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ inputs.version }}-${{ steps.platform.outputs.tag }}
           labels: |
             org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}
             org.opencontainers.image.revision=${{ github.sha }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
-          platforms: linux/amd64,linux/arm64
+          platforms: ${{ matrix.platform }}
+          provenance: false
+
+  merge:
+    name: Create Multi-Arch Manifest
+    runs-on: ubuntu-latest
+    needs: build
+    permissions:
+      contents: write
+      packages: write
+    steps:
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Create and push multi-arch manifest
+        run: |
+          docker buildx imagetools create \
+            -t ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ inputs.version }} \
+            -t ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest \
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ inputs.version }}-linux-amd64 \
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ inputs.version }}-linux-arm64
 
       - name: Add Docker image info to release
         uses: actions/github-script@v7