anchor.diff:  FROM fedora:latest
   MAINTAINER alex@alexblackie.com
  -
  -ENV PATH /home/developer/bin:$PATH
   
   ARG RUBY_MAJOR=2.3
   ARG RUBY_MINOR=1
  
positive.code: # Set up development environment configuration
  ##
  
  # Add unprivileged user to run as
  RUN useradd -m developer
  USER developer
  
negative.code: # Add bundler config to use `/data/vendor/bundle` as the gem install path
  RUN mkdir ~/.bundle && \
  	echo -e "BUNDLE_DISABLE_LOCAL_BRANCH_CHECK: 'true'\nBUNDLE_PATH: vendor/bundle\nBUNDLE_DISABLE_SHARED_GEMS: 'true'\n" > ~/.bundle/config
  
  # Switch back to root for initialisation
  # we `su` to developer manually
  