anchor.diff:  #    source setenv.sh && \
   #    make
   
  -# TODO: maybe defunc yum update, yum upgrade, yum install etc ... (= defunc yum); alias doesn't work
  -
   ENTRYPOINT ["/bin/bash"]
  
positive.code:     zip \
      unzip \
      wget \
      && yum -y clean all 
  
  # TODO: this is an intermediate state. must be cleaned before a new base image is released
  
  RUN wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-8.noarch.rpm && rpm -ivh epel-release-7-8.noarch.rpm
  
  RUN yum -y update && \
      yum -y upgrade && \
      yum -y clean all
  
  RUN yum -y install --setopt=tsflags=nodocs bison bison-devel ant flex flex-devel ghostscript compat-gcc-34-g77 \
      && yum -y clean all 
  RUN yum -y install --setopt=tsflags=nodocs \
      libX11 libX11-devel libXpm libXpm-devel libXft libXft-devel libX11-common libXext libXext-devel \
      && yum -y clean all 
  RUN yum -y install --setopt=tsflags=nodocs \
      openjdk-7-jdk \
      zsh \
      fftw-devel \
      && yum -y clean all 
  
  RUN yum -y install --setopt=tsflags=nodocs \
      bzip2 \
      binutils \
      python \
  
negative.code: 
  MAINTAINER Stefan Geißelsöder <stefan.geisselsoeder@fau.de>
  
  # everything is in one command to avoid itnermediate layers (saves space)
  #RUN yum -y install centos-release-scl && \
  RUN  yum -y update && \
      yum -y upgrade && \
      yum -y install --setopt=tsflags=nodocs \
      automake \
      autoconf \
      bash \
      cvs \
      gcc \
      gcc \
      gcc-c++ \
      git \
  