anchor.diff:  ENV DEBIAN_FRONTEND noninteractive
   
   ################## BEGIN INSTALLATION ######################
  -# apt update
  -RUN apt-get clean all && apt-get update && apt-get upgrade -y
   
  -# apt install
  -RUN apt-get install -y  \
  +# add apt mirror
  +RUN mv /etc/apt/sources.list /etc/apt/sources.list.bkp && \
  +    bash -c 'echo -e "deb mirror://mirrors.ubuntu.com/mirrors.txt precise main restricted universe multiverse\n\
  +deb mirror://mirrors.ubuntu.com/mirrors.txt precise-updates main restricted universe multiverse\n\
  +deb mirror://mirrors.ubuntu.com/mirrors.txt precise-backports main restricted universe multiverse\n\
  +deb mirror://mirrors.ubuntu.com/mirrors.txt precise-security main restricted universe multiverse\n\n" > /etc/apt/sources.list' && \
  +    cat /etc/apt/sources.list.bkp >> /etc/apt/sources.list && \
  +    cat /etc/apt/sources.list
  +
  +# apt update and install global requirements
  +RUN apt-get clean all &&\
  +    apt-get update &&\ 
  +    apt-get upgrade -y && \
  +    apt-get install -y  \
           autotools-dev   \
           automake        \
           cmake           \
  
positive.code: # Overwrite this with 'CMD []' in a dependent Dockerfile
  CMD ["/bin/bash"]
  
  ##################### INSTALLATION END #####################
  
  # File Author / Maintainer
  
negative.code:         zlib1g-dev && \
      apt-get clean && \
      apt-get purge && \
      rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
  
  #        subversion \
  #        mercurial  \
  #        cvs        \
  
  # create shared folders
  RUN mkdir /data /config
  
  # Add user biodocker with password biodocker
  RUN useradd --create-home --shell /bin/bash --user-group --uid 1000 --groups sudo,fuse biodocker && \
      echo `echo "biodocker\nbiodocker\n" | passwd biodocker` && \
      chown biodocker:biodocker /data && \
  