Update docs

docs/content/advanced/config/optional-config.md

@@ -4,12 +4,13 @@ title: Optional Configuration
 
 You can set these environment variables to configure the container. They are not required, but can be useful in some cases.
 
-| Env            | Default   | Example     | Description                        |
-| -------------- | --------- | ----------- | ---------------------------------- |
-| `PORT`         | `51821`   | `6789`      | TCP port for Web UI.               |
-| `HOST`         | `0.0.0.0` | `localhost` | IP address web UI binds to.        |
-| `INSECURE`     | `false`   | `true`      | If access over http is allowed     |
-| `DISABLE_IPV6` | `false`   | `true`      | If IPv6 support should be disabled |
+| Env                     | Default   | Example     | Description                             |
+| ----------------------- | --------- | ----------- | --------------------------------------- |
+| `PORT`                  | `51821`   | `6789`      | TCP port for Web UI.                    |
+| `HOST`                  | `0.0.0.0` | `localhost` | IP address web UI binds to.             |
+| `INSECURE`              | `false`   | `true`      | If access over http is allowed          |
+| `DISABLE_IPV6`          | `false`   | `true`      | If IPv6 support should be disabled      |
+| `DISABLE_VERSION_CHECK` | `false`   | `true`      | If wg-easy should check for new updates |
 
 /// note | IPv6 Caveats