It appears to have a very unhappy time, primarily because the memory cgroup is not enabled. That was a deliberate choice because from what I can see there is a performance hit for enabling that (as well as the swap cgroup), and we decided to leave that disabled rather than give all users a performance hit in order to benefit docker users.
I ran through the whole process linked from the Github repo (http://docs.docker.io/en/latest/contributing/devenvironment/), though I only gist'd step 5