anchor.diff:  
   # upgrade pip and install python dependencies
   ENV PATH $HOME/.local/bin:$PATH
  -RUN python -m pip install --user --upgrade pip
  +RUN python3 -m pip install --user --upgrade pip
   RUN pip install --user numpy scipy cython nose tables matplotlib jinja2 \
                          setuptools future
   
  
positive.code: FROM ubuntu:18.04
  
  ENV HOME /root
  
  
negative.code: 
  # Install PyNE
  RUN cd $HOME/opt \
      && git clone https://github.com/kkiesling/pyne.git \
      && cd pyne \
      && TAG=$(git describe --abbrev=0 --tags) \
      && git checkout origin/0.7.0-rc -b 0.7.0-rc \
      && python3 setup.py install --user \
                                 --moab $HOME/opt/moab \
                                 --dagmc $HOME/opt/dagmc \
                                 --clean
  
  RUN echo "export PATH=$HOME/.local/bin:\$PATH" >> ~/.bashrc \
      && echo "export LD_LIBRARY_PATH=$HOME/.local/lib:\$LD_LIBRARY_PATH" >> ~/.bashrc \
      && echo "alias build_pyne='python3 setup.py install --user -- -DMOAB_LIBRARY=\$HOME/opt/moab/lib -DMOAB_INCLUDE_DIR=\$HOME/opt/moab/include'" >> ~/.bashrc
  
  ENV LD_LIBRARY_PATH $HOME/.local/lib:$LD_LIBRARY_PATH
  
  RUN cd $HOME/opt/pyne && python3 ./scripts/nuc_data_make
  
  RUN cd $HOME/opt/pyne/tests \
      && ./travis-run-tests.sh python3 \
      && echo "PyNE build complete. PyNE can be rebuilt with the alias 'build_pyne' executed from $HOME/opt/pyne"
  