anchor.diff:  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-4.9  /usr/bin/gfortran
  +RUN ln -s  /usr/bin/gfortran-5 /usr/bin/gfortran
   
   RUN chown -R ${GITLAB_RUNNER_USER}:${GITLAB_RUNNER_USER} ${GITLAB_RUNNER_HOME_DIR}
   
  
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: ENV CI_SERVER_URL=''
  ENV RUNNER_TOKEN=''
  ENV RUNNER_EXECUTOR='docker'
  ENV RUNNER_DESCRIPTION=gcc5-python2
  ENV RUNNER_TAG_LIST=gcc,python
  ENV RUNNER_LIMIT=1
  
  ENV RUNNER_DOCKER_IMAGE='docker:latest'
  ENV RUNNER_DOCKER_MODE='socket'
  