Update Docker workflow to log in to GitHub Container Registry and build multi-architecture images with metadata extraction

.github/workflows/docker-image-linux.yml

@@ -22,33 +22,30 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
-      - name: Login to Docker Hub
+      - name: Login to GitHub Container Registry
         uses: docker/login-action@v3
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Build and push amd64
-        uses: docker/build-push-action@v6
+      - name: Extract metadata for Docker
+        id: meta
+        uses: docker/metadata-action@v5
         with:
-          context: .
-          file: ./Dockerfile
-          push: true
-          platforms: linux/amd64
-          build-args: |
-            ARCH=x86_64
+          images: ${{ env.REGISTRY }}/${{ env.GITHUBUSER }}/${{ env.IMAGE_NAME }}
           tags: |
-            ${{ env.REGISTRY }}/${{ env.GITHUBUSER }}/${{ env.IMAGE_NAME }}:latest
+            type=raw,value=latest
+            type=sha,format=short
 
-      - name: Build and push arm64
+      - name: Build and push both architectures
         uses: docker/build-push-action@v6
         with:
           context: .
           file: ./Dockerfile
           push: true
-          platforms: linux/arm64
-          build-args: |
-            ARCH=aarch64
-          tags: |
-            ${{ env.REGISTRY }}/${{ env.GITHUBUSER }}/${{ env.IMAGE_NAME }}:latest
+          platforms: linux/amd64,linux/arm64
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max