Update readme

README.md

@@ -36,6 +36,19 @@ Please open the `.env` environment file in your editor of choice and populate th
 If you need to modify the Caddy web server configuration, please refer to
 the [Caddyfile documentation](https://caddyserver.com/docs/caddyfile).
 
+## Updating Coterm
+
+### Compose file
+
+To update Coterm to the latest version, simply run `docker compose pull`, `docker compose down`,
+and `docker compose up -d`.
+
+### Docker run command
+
+To update Coterm to the latest version, run `docker pull ghcr.io/convoypanel/coterm:latest`. Then, stop the existing
+container with `docker stop <container id>` (you can find the container id by running `docker ps`). Finally, run the new
+container with the same command you used to start it.
+
 ## For development
 
 ### Build the source code