chore: introduce docker buildx for multi-platform build

.github/workflows/release-push-docker.yml

@@ -18,6 +18,9 @@ jobs:
       - name: Setup QEMU
         uses: docker/setup-qemu-action@v3
 
+      - name: Setup Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
       - name: Log in to Docker Hub
         uses: docker/login-action@v2
         with: