docs: add automatic updates example in README.md

README.md

@@ -161,6 +161,15 @@ To get the latest version just run
     docker-compose down && docker-compose pull && docker-compose up -d --no-build
 
 in the folder where `docker-compose.yml` is located. Backup is not required as your data is saved in Docker volumes but recommended.
+You could also set up [watchtower](https://github.com/containrrr/watchtower) for automatic updates.
+
+    docker run -d \
+        --name watchtower \
+        -v /var/run/docker.sock:/var/run/docker.sock \
+        --restart always \
+        containrrr/watchtower \
+        --cleanup --include-restarting \
+        dec0dos/zero-ui dec0dos/zerotier-controller
 
 ### Backup
 The easiest way to create your ZeroUI data backup is to use the following commands: