anchor.diff:  # build MOAB
   RUN mkdir moab \
       && cd moab \
  -    && git clone --branch 5.3.1 --single-branch --depth 1 https://bitbucket.org/fathomteam/moab moab \
  +    && git clone --branch 5.4.0 --single-branch --depth 1 https://bitbucket.org/fathomteam/moab moab \
       && mkdir build \
       && cd build \
       && cmake ../moab/ \
  
positive.code: 
  # Install OpenMC API
  RUN git clone https://github.com/openmc-dev/openmc.git \
      && cd openmc && git checkout develop \
      && mkdir bld && cd bld \
      && cmake .. -DCMAKE_INSTALL_PREFIX=$HOME/.local \
      && make && make install \
  
negative.code: # Install PyNE
  RUN git clone https://github.com/pyne/pyne.git \
      && cd pyne \
      && git checkout tags/0.7.7 -b 0.7.7 \
      && python setup.py install --user \
                                 --moab $HOME/opt/moab \
                                 --dagmc $HOME/opt/dagmc \
  