anchor.diff:  RUN apt-get install -y mono-devel mono-utils mono-xbuild nant
   
   # Java
  -RUN apt-get install -y openjdk-7-doc openjdk-7-jdk
  +RUN apt-get install -y openjdk-7-jre
   RUN apt-get install -y ant maven2
   
   # editors
  
positive.code: RUN curl https://storage.googleapis.com/golang/go1.6.linux-amd64.tar.gz | tar -C /opt -xz
  RUN git clone https://github.com/lennartcl/gitl.git /opt/gitl
  
  # all changes go down here:
  # RUN ...
  
  # setup the system
  RUN echo -n "" > /etc/motd && \
      echo "export PATH=/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin" >> /root/.bashrc && \
  
negative.code: RUN apt-get install -y redis-server redis-tools nginx postgresql-9.3
  RUN apt-get install -y mysql-server rabbitmq-server couchdb
  
  # misc tools
  RUN apt-get install -y dnsutils bash-completion xsltproc \
      build-essential fakeroot tmux duplicity lftp htop apt-file \
      parallel strace ltrace flex jq ack-grep gdb valgrind locate tree time \
  