add watchtower in example compose file

docker-compose.Example.yml

@@ -10,6 +10,7 @@ services:
       - internal
     ports:
       - "8001:8001"
+
   db:
     image: mariadb:11
     restart: unless-stopped
@@ -30,6 +31,22 @@ services:
     networks:
       - internal
 
+  # Watchtower is a service that will automatically update your running containers
+  # when a new image is available. This is useful for keeping your server up-to-date.
+  # see https://containrrr.dev/watchtower/ for more information.
+  watchtower:
+    image: containrrr/watchtower
+    container_name: watchtower
+    restart: always
+    security_opt:
+      - no-new-privileges:true
+    environment:
+      WATCHTOWER_CLEANUP: true
+      WATCHTOWER_SCHEDULE: "@midnight"
+    volumes:
+      - /etc/localtime:/etc/localtime:ro
+      - /var/run/docker.sock:/var/run/docker.sock
+
 volumes:
   database: