Merge pull request #1770 from gravitl/feature_v0.17.0_netclient_userspace_multiarch

add multiarch suport for netclient-docker usersapce

.github/workflows/publish-netclient-docker-userspace.yml

@@ -32,7 +32,7 @@ jobs:
         uses: docker/setup-qemu-action@v2
       - 
         name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
       - 
         name: Login to DockerHub
         uses: docker/login-action@v2
@@ -44,7 +44,7 @@ jobs:
         uses: docker/build-push-action@v3
         with:
           context: .
-          platforms: linux/amd64
+          platforms: linux/amd64, linux/arm64, linux/arm/v7
           file: ./docker/Dockerfile-netclient-multiarch-userspace
           push: true
           tags: gravitl/netclient-go:${{ env.TAG }}, gravitl/netclient-userspace:latest