Add github action to rebuild eufy bridge nightly and on push

.github/workflows/main.yml

@@ -0,0 +1,43 @@
+name: build-and-push
+
+on:
+  # Triggers the workflow on push or pull request events but only for the main branch
+  push:
+    branches: [ main ]
+  schedule:
+    # * is a special character in YAML so you have to quote this string
+    - cron:  '17 3 * * *'
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+
+jobs:
+  eufy-ha-mqtt-bridge:
+    runs-on: ubuntu-latest
+
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      -
+        name: Login to DockerHub
+        uses: docker/login-action@v1 
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          context: eufy-ha-mqtt-bridge/
+          file: eufy-ha-mqtt-bridge/Dockerfile-real
+          platforms: linux/amd64,linux/arm/v7,linux/arm64
+          push: true
+          tags: |
+            maxwinterstein/homeassistant-addon-eufy-ha-mqtt-bridge:latest