include healthcheck in default actions

docker-compose.yml

@@ -1,10 +1,16 @@
-version: '2'
+version: '3'
 
 services:
   voltronic-mqtt:
 
-    build: .
-    #image: bushrangers/ha-voltronic-mqtt
+    # We're now (finally) supporting Multi-Arch builds (via Github actions) on Docker Hub!
+    # image: bushrangers/ha-voltronic-mqtt
+
+    # Uncomment if you want to build your own local version.
+    build:
+      context: .
+      dockerfile: Dockerfile.dev
+
 
     container_name: voltronic-mqtt
 
@@ -26,3 +32,19 @@ services:
       - /dev/ttyS0:/dev/ttyS0
       - /dev/ttyS1:/dev/ttyS1
       - /dev/ttyS2:/dev/ttyS2
+
+  # Used to auto-update images as we release new versions...
+  watchtower:
+    # Please see the following for configuration options:
+    #    https://containrrr.github.io/watchtower/container-selection/
+    image: containrrr/watchtower
+    container_name: watchtower
+
+    restart: always
+    privileged: true
+
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+
+    command: --interval 500
+