I had a blast presenting at ContainerCon 2015 (also called LinuxCon and Cloud Open). Unfortunately, none of the sessions were recorded but I do have my slides available. The session title was "Dude, where's my data? Persistence with Docker". As you can guess, I talked about how you can achieve data persistence between containers and save state. It even included a demo of migrating a wordpress instance across hosts. You can access them at bit.ly/containercon.