Running through the Docker Compose tutorial on http://www.linux.com/learn/tutorials/893685-introduction-to-docker-compose-tool-for-multi-container-applications/
This sets up a instance of Ghost micro blogging platform running in a Docker image connected to a MySQL Docker images.
There are also a couple of scripts to backup and restore the MySQL database.
Useful pages
https://docs.docker.com/v1.5/compose/yml/
https://docs.docker.com/v1.5/compose/
https://hub.docker.com/r/confirm/mysql-backup/
Find all the details on the Github repo https://github.com/alastairhm/compose-tut