anchor.diff:  # PETPVC (https://github.com/UCL/PETPVC)
   #-------------------------------------------------------------------------------
   RUN \
  -    if [ ! -e  $SOFT/petpvc ]; then \
  -        mkdir petpvc && \
  -        cd petpvc && \
  -        git clone https://github.com/UCL/PETPVC.git -b $PETPVC_VERSION && \
  -        mkdir build && \
  -        cd build && \
  -        cmake -DITK_DIR=$HOME/ants/build/ITKv4-build && \
  -        make -j $N_CPUS && \
  -        cd ../..; \
  -    fi
  +    mkdir petpvc && \
  +    cd petpvc && \
  +    git clone https://github.com/UCL/PETPVC.git -b $PETPVC_VERSION && \
  +    mkdir build && \
  +    cd build && \
  +    cmake -DITK_DIR=$HOME/ants/build/ITKv4-build && \
  +    make -j $N_CPUS && \
  +    cd ../..; \
   
   RUN echo "addapath $HOME/petpvc/build/src" >> $BASHRC
   
  
positive.code:     apt-get install -f
  
  RUN \
      if [ ! -e  $HOME/abin ]; then \
          chsh -s /usr/bin/tcsh  && \
          curl -O https://afni.nimh.nih.gov/pub/dist/bin/linux_fedora_21_64/@update.afni.binaries && \
          tcsh @update.afni.binaries -package linux_openmp_64 -do_extras && \
          chsh -s /bin/bash ;\
      fi
  
  RUN \
      echo "addapath $HOME/abin" >> $BASHRC
  
negative.code: # ANTS (https://github.com/stnava/ANTs)
  #-------------------------------------------------------------------------------
  RUN \
      mkdir ants && \
      cd ants && \
      git clone https://github.com/stnava/ANTs.git -b $ANTS_VERSION  && \
      mkdir build && \
      cd build && \
      cmake -DUSE_VTK=ON -DUSE_SYSTEM_VTK=ON -DVTK_DIR=$HOME/vtk/build && \
      make -j $N_CPUS && \
      make install && \
      cd ../..; \
  
  RUN \
      echo "export ANTSPATH=${HOME}/ants/build/bin" >> $BASHRC
  