make wanted changes

Signed-off-by: Ivan Schaller <ivan@schaller.sh>

examples/README.md

@@ -1,6 +1,19 @@
 # Examples
 
+> The default container user has uid 65534.
+
 ## docker-simple
 
 An example how to setup endlessh-go, Prometheus, and Grafana using [docker compose](https://docs.docker.com/compose/).
 
+## docker-maxmind
+
+An example how to setup endlessh-go with the Maxmind GeoIP Database.
+
+### Using privileged ports (<1024) on docker
+
+If you want to run the image with privileged ports (below 1025), you need to set the container user to root:
+
+```yml
+user: root
+```

examples/docker-maxmind/README.md

@@ -0,0 +1,16 @@
+## docker compose
+
+This is an example how to setup endlessh-go with the Maxmind GeoIP Database using [docker compose](https://docs.docker.com/compose/). The reference of the compose file can be found [here](https://docs.docker.com/compose/compose-file/).
+
+To start the stack, in the _examples_ folder, run:
+
+```
+sudo docker-compose up -d
+```
+
+The GeoIP Database will be saved in a mounted volume in: `./geo-data`. And the endlessh-go container will use this database to do the location lookups.
+
+This example exposes the following ports. Except the SSH port, you should not expose other ports to public without protections (not included in this example) in production.
+
+-   **2222**: The SSH port. You may test endlessh-go by running `ssh -p 2222 localhost`. Your SSH client should hang. View the log of endlessh-go by running `sudo docker logs endlessh`.
+-   **2112**: The Prometheus metrics exported by endlessh-go. Go to [http://localhost:2112/metrics](http://localhost:2112/metrics) in your web browser to view the metrics.