Major setup difficulties related to dependency management and setup workflow

[gmittal]

During Justin's onboarding session pip install -r requirements.txt in setup failed. This is the user requirements.txt’s problem but we should have a story to support it.

• Justin took these actions: ssh mycluster, manually vim edit, manually run
  • This is because he’s not using workdir -> can’t edit requirements.txt locally

We don't have a final solution but one possibility is to use docker for setup (discussed partially) -- see this gist.