During the talk I presented a tool that is helping me focus on developing the different containers and make the changes to the Dockerfile and the apps themselves and leave out the details of using fig.
The tool is called guard-fig. It builds on top of guard to detect changes to your fig projects and will stop and rebuild the corresponding containers as well as restarting the linked containers to keep everything working smoothly. It also offers configurable integration with boot2docker and building your whole project on start.
If you’re working with fig, give it a try and report any issues.
You can find the slides for my talk here