Enhance Docker build workflow with BuildX and caching

Add Docker BuildX platform support and implement GitHub Actions cache for faster, more efficient Docker image builds for gas-station and streamr-destination components

Author: outerlook

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

@@ -26,6 +26,11 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          platforms: linux/amd64
+
       - name: Log in to the Container registry
         uses: docker/login-action@v3
         with:
@@ -61,16 +66,20 @@ jobs:
         uses: docker/build-push-action@v5
         with:
           context: .
-          build-args: path=sources/gas-station
           push: true
+          build-args: path=sources/gas-station
           tags: ${{ steps.meta-gas.outputs.tags }}
           labels: ${{ steps.meta-gas.outputs.labels }}
+          cache-from: type=gha,scope=gas-station
+          cache-to: type=gha,mode=max,scope=gas-station
 
       - name: Build and push Streamr Destination image
         uses: docker/build-push-action@v5
         with:
           context: .
-          build-args: path=destinations/streamr-destination
           push: true
+          build-args: path=destinations/streamr-destination
           tags: ${{ steps.meta-streamr.outputs.tags }}
-          labels: ${{ steps.meta-streamr.outputs.labels }} 
+          labels: ${{ steps.meta-streamr.outputs.labels }}
+          cache-from: type=gha,scope=streamr-destination
+          cache-to: type=gha,mode=max,scope=streamr-destination