Add github action to publish to docker hub

.github/workflows/publish.yml

@@ -0,0 +1,25 @@
+name: 'Publish'
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish:
+    name: Publish
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout the repository
+      uses: actions/checkout@v2
+    - name: Login to DockerHub
+      uses: docker/login-action@v1
+      with:
+        username: ${{ secrets.DOCKERHUB_USERNAME }}
+        password: ${{ secrets.DOCKERHUB_TOKEN }}
+    - name: Publish
+      uses: home-assistant/builder@master
+      with:
+        args: |
+          --aarch64 \
+          --target nginx_proxy/
+          --docker-hub jhampdbre