anchor.diff:  # put MOAB on the path
   ENV LD_LIBRARY_PATH $HOME/opt/moab/lib:$LD_LIBRARY_PATH
   ENV LIBRARY_PATH $HOME/opt/moab/lib:$LIBRARY_PATH
  -ENV PYTHONPATH=$HOME/opt/moab/lib/python2.7/site-packages/
  +ENV PYTHONPATH=$HOME/opt/moab/lib/python3.8/site-packages/
   
   RUN cd /root \
  -    && git clone https://github.com/svalinn/DAGMC.git \
  -    && cd DAGMC \
  -    && git checkout develop \
  -    && mkdir bld \
  -    && cd bld \
  -    && cmake .. -DMOAB_DIR=$HOME/opt/moab \
  -              -DBUILD_STATIC_LIBS=OFF \
  -              -DCMAKE_INSTALL_PREFIX=$HOME/opt/dagmc \
  +    && git clone --branch develop --single-branch https://github.com/svalinn/DAGMC.git DAGMC \
  +    && mkdir build \
  +    && cd build \
  +    && cmake ../DAGMC \
  +            -DMOAB_DIR=$HOME/opt/moab \
  +            -DBUILD_STATIC_LIBS=OFF \
  +            -DCMAKE_INSTALL_PREFIX=$HOME/opt/dagmc \
       && make \
       && make install \
  -    && cd ../.. \
  -    && rm -rf DAGMC
  +    && cd .. \
  +    && rm -rf build DAGMC
   
   
   # Install PyNE
  
positive.code: FROM ubuntu:18.04
  
  ENV HOME /root
  
  RUN apt-get -y  update
  
negative.code:     software-properties-common wget
  
  # pyne specific dependencies (excluding python libraries)
  RUN apt-get install -y build-essential git cmake gfortran libblas-dev \
                         python3-pip liblapack-dev libeigen3-dev libhdf5-dev \
                         libpython3-dev python3-dev libhdf5-serial-dev hdf5-tools
  
  # need to put libhdf5.so on LD_LIBRARY_PATH
  ENV LD_LIBRARY_PATH /usr/lib/x86_64-linux-gnu
  ENV LIBRARY_PATH /usr/lib/x86_64-linux-gnu
  
  # switch to python 3
  RUN update-alternatives --install /usr/bin/python python /usr/bin/python3 10; \
      update-alternatives --install /usr/bin/pip pip /usr/bin/pip3 10;
  
  # upgrade pip and install python dependencies
  ENV PATH $HOME/.local/bin:$PATH
  