anchor.diff:  FROM phusion/baseimage:0.9.19
   
   # Set basic ENV vars
  -ENV HOME=/root \
  -  TERM=xterm-color \
  -  NODE_VERSION_MAJOR=6 \
  -  PHOENIX_VERSION=1.2.0
  +ENV HOME=/root TERM=xterm-color
   
   # Elixir requires UTF-8
   RUN locale-gen en_US.UTF-8
  
positive.code: WORKDIR $APP_HOME
  
  # Install Hex, Phoenix and Rebar
  RUN setuser app mix local.hex --force
  RUN setuser app mix archive.install --force https://github.com/phoenixframework/archives/raw/master/phoenix_new-$PHOENIX_VERSION.ez
  RUN setuser app mix local.rebar --force
  
negative.code:   && apt-get install -y esl-erlang elixir
  
  # Install Node.js
  ENV NODE_VERSION_MAJOR=6
  RUN curl -sL https://deb.nodesource.com/setup_$NODE_VERSION_MAJOR.x | bash - && apt-get install -y nodejs
  
  # Create app user and set WORKDIR to its home dir
  