Add support for multiple platforms in Docker build

Author: hogyesn

.github/workflows/docker-image.yml

@@ -34,6 +34,7 @@ jobs:
     - name: Build and push
       uses: docker/build-push-action@v5
       with:
+        platforms: linux/amd64,linux/arm64
         context: .
         push: true
         build-args: |