Update self-hosting/lifecycle-maintenance/healthchecks.mdx

Co-authored-by: benitav <[email protected]>

Author: DominicGBauer

self-hosting/lifecycle-maintenance/healthchecks.mdx

@@ -23,3 +23,7 @@ You can use the `/probes/liveness` endpoint to confirm the service is alive.
 A `200` status code shows the system is alive.
 
 A `400` status code shows the system is **not** alive.
+
+<Tip>
+**Example**: An example configuration with Docker Compose is available in the [self-host-demo app](https://github.com/powersync-ja/self-host-demo/blob/main/services/powersync.yaml).
+</Tip>