```
expose:
- "2222:22"
+ - "127.0.0.1:20080:80"
```
-Expose port 22 inside the container on port 2222 on ALL local host interfaces.
+Expose port 22 inside the container on port 2222 on ALL local host interfaces. In order to bind to only one interface, you may specify the host's IP address as `([<host_interface>:[host_port]])|(<host_port>):]<container_port>[/udp]` as defined in the [docker port binding documentation](http://docs.docker.io/en/latest/use/port_redirection/)
#### volumes:
### Advanced topics
- [Setting up SSL with Discourse Docker](https://meta.discourse.org/t/allowing-ssl-for-your-discourse-docker-setup/13847)
+- [Multisite configuration with Docker](https://meta.discourse.org/t/multisite-configuration-with-docker/14084)