Checking Out GitHub PRs

Example .git/config

[remote "upstream"]                                                            
    url = https://github.com/scikit-learn/scikit-learn                         
    fetch = +refs/heads/*:refs/remotes/upstream/*                              
    fetch = +refs/pull/*/head:refs/remotes/upstream/pr/*

Setup docker on CoreOS

A great intro to docker on CoreOS - it's as easy as

docker pull ubuntu
docker run -name="test" -t -i ubuntu /bin/bash

http://tonyhb.com/unsuck-your-vagrant-developing-in-one-vm-with-vagrant-and-docker