Setup
First build Dockerfile.base with the tag dev_base
Then build Dockerfile with the tag dev
Finally make sure both scripts in bin/ are executable, and add them to
$PATH
You should be able to use setup <name> [git repo] to start a project
container, and teardown <name> to bind up a wip branch and destroy the
container. If a container with the name docker-host exists, then it will
automatically link to it and support docker commands inside.