anchor.diff:  RUN if [ "$include_dagmc" = "true" ] ; \
       then mkdir DAGMC ; \
       cd DAGMC ; \
  -    git clone -b develop https://github.com/svalinn/DAGMC.git ; \
  +    git clone --single-branch --branch develop develop https://github.com/svalinn/DAGMC.git ; \
       mkdir build ; \
       cd build ; \
       cmake ../DAGMC -DBUILD_TALLY=ON \
  -                   -DCMAKE_INSTALL_PREFIX=/dagmc/ \
  +                   -DCMAKE_INSTALL_PREFIX=/DAGMC/ \
                      -DMOAB_DIR=/usr/local \
                      -DBUILD_STATIC_LIBS=OFF \
                      -DBUILD_STATIC_EXE=OFF ; \
       make -j"$compile_cores" install ; \
  -    rm -rf /DAGMC/dagmc /DAGMC/build ; \
  +    rm -rf /DAGMC/DAGMC /DAGMC/build ; \
       fi
   
   # Clone and install OpenMC with DAGMC
  
positive.code: 
  # Clone and install Embree
  RUN if [ "$include_dagmc" = "true" ] ; \
      then git clone https://github.com/embree/embree.git ; \
      cd embree ; \
      mkdir build ; \
      cd build ; \
  
negative.code: 
  # Clone and install Double-Down
  RUN if [ "$include_dagmc" = "true" ] ; \
      then git clone --single-branch --branch main https://github.com/pshriwise/double-down.git ; \
      cd double-down ; \
      mkdir build ; \
      cd build ; \
  