anchor.diff:  #====================================================================================
  -FROM python:2.7.16-buster
  +FROM python:3.6
   
   #====================================================================================
   LABEL maintainer="Patrick.Brockmann@lsce.ipsl.fr"
  
positive.code: RUN git clone https://github.com/PBrockmann/fast
  
  #====================================================================================
  ENV FER_DIR="/opt/PyFerret-7.5.0-RHEL7-64-Python2.7"
  ENV FER_DSETS="/opt/fer_dsets"
  
  ENV PYTHONPATH="${FER_DIR}/lib/python2.7/site-packages:${PYTHONPATH}"
  ENV LD_LIBRARY_PATH="${FER_DIR}/lib/python2.7/site-packages/pyferret:${LD_LIBRARY_PATH}"
  
  ENV FER_DATA=". ${FER_DSETS}/data ${FER_DIR}/contrib /opt/fast"
  ENV FER_DESCR=". ${FER_DSETS}/descr"
  
negative.code:     ${NB_USER}
  
  #====================================================================================
  # pyferret installation
  
  USER root
  WORKDIR /opt
  RUN git clone https://github.com/NOAA-PMEL/FerretDatasets && \
      mv FerretDatasets fer_dsets
  
  