anchor.diff:  FROM progrium/cedarish:cedar14
   MAINTAINER Fabio Rehm "fgrehm@gmail.com"
   
  -ENV HOME /home/devstep
  -ENV DEVSTEP_PATH /opt/devstep
  -ENV DEVSTEP_CONF /etc/devstep
  -ENV LANG en_US.UTF-8
  -ENV LC_ALL en_US.UTF-8
  -ENV LC_CTYPE en_US.UTF-8
  +ENV HOME=/home/devstep \
  +    DEVSTEP_PATH=/opt/devstep \
  +    DEVSTEP_CONF=/etc/devstep \
  +    LANG=en_US.UTF-8 \
  +    LC_ALL=en_US.UTF-8 \
  +    LC_CTYPE=en_US.UTF-8
   
   #####################################################################
   # Create a default user to avoid using the container as root, we set
  
positive.code:     rm -rf /var/lib/apt/lists/*
  
  #####################################################################
  # * Install dependencies for rubies, php and possibly other programming
  #   language envs as well
  # * Install and configure PostgreSQL and MySQL clients
  # * Install bash-completion to save us a few keystrokes
  # * Install vim because editing files with plain old vi sucks
  
negative.code: 
  RUN DEBIAN_FRONTEND=noninteractive && \
      apt-get update && \
      apt-get install -y libreadline5 libmcrypt4 libffi-dev --no-install-recommends && \
      apt-get install -y postgresql-client mysql-client libsqlite3-dev --no-install-recommends && \
      apt-get install -y --force-yes vim htop tmux mercurial bzr nodejs libssl0.9.8 --no-install-recommends && \
      apt-get install -y software-properties-common bash-completion --no-install-recommends && \
  