anchor.diff:  
   # install build essentials
   RUN apt-get install -y --no-install-recommends make cmake \
  -        gfortran-4.9 gfortran-4.9-multilib \
  -        gcc-5 g++-5 \
  +        gfortran-5 gfortran-5-multilib gcc-5 g++-5 \
           autotools-dev autoconf libtool automake \
           libboost-dev libgmp3-dev liblapack-dev \
           doxygen gcovr graphviz
  
positive.code: 
  ENV LC_ALL en_US.UTF-8
  ENV LANG en_US.UTF-8
  
  ENV RUNNER_DESCRIPTION=gcc5
  ENV RUNNER_TAG_LIST=c++
  ENV RUNNER_LIMIT=1
  
  ENV RUNNER_TOKEN=
  ENV CI_SERVER_URL=
  
negative.code: RUN ln -s  /usr/bin/gcov-5  /usr/bin/gcov
  RUN ln -s  /usr/bin/g++-5  /usr/bin/g++
  RUN ln -s  /usr/bin/gcc-5  /usr/bin/gcc
  RUN ln -s  /usr/bin/gfortran-5 /usr/bin/gfortran
  
  RUN chown -R ${GITLAB_RUNNER_USER}:${GITLAB_RUNNER_USER} ${GITLAB_RUNNER_HOME_DIR}
  
  