anchor.diff:  
   # Install some Linux packages
   
  -RUN apt-get install -y curl git
  +RUN apt-get install -y curl git bzip2
   
   # In case the user wants to run a IPyNB
   
  
positive.code: # Dockerfile that contains Unidata Python and ancillary technology (e.g.,IPyNB)
  
  FROM ubuntu
  
  MAINTAINER Julien Chastang <chastang@ucar.edu>
  
  
negative.code:     matplotlib cartopy OWSLib siphon MetPy xray pyzmq jinja2 tornado \
      jsonschema networkx
  
  RUN conda install -n unidata --yes --quiet conda-server
  
  RUN mkdir -p /home/python/work
  
  