anchor.diff:  ADD ./run.sh /run.sh
   RUN chmod 755 /run.sh
   
  -RUN echo 'deb http://http.debian.net/debian/ jessie main contrib non-free'>>/etc/apt/sources.list
  -RUN dpkg --add-architecture i386
  -RUN apt-get -y update
  -RUN apt-get install -y lib32gcc1 sudo wget lib32stdc++6 lib32z1 lib32z1-dev
  -RUN rm -rf /var/lib/apt/lists/*
  +ADD ./start.sh /start.sh
  +RUN chmod 755 /start.sh
   
   RUN useradd -m -s /bin/bash steam
   RUN usermod -a -G video,audio steam
  
positive.code: FROM debian:jessie
  MAINTAINER Josh Cox <josh 'at' webhosting coop>
  
  ENV STEAMER_UPDATED 20150513
  # override these variables in your Dockerfile
  
negative.code: RUN wget https://steamcdn-a.akamaihd.net/client/installer/steamcmd_linux.tar.gz
  RUN tar zxvf steamcmd_linux.tar.gz
  
  ENTRYPOINT ["/start.sh"]
  