anchor.diff:  
   # compatible with 4.1.8
   ENV GSIVERSION 1.2
  -# # compatible with 4.1.9
  -# ENV GSIVERSION 1.3
  +# # compatible with 4.1.10
  +# ENV GSIVERSION 1.4
   ENV IRODSGSI "$IRODSFTP/plugins/irods_auth_plugin_gsi/$GSIVERSION"
   # ENV SLIBS /sharedlibs
   # RUN mkdir $SLIBS
  
positive.code: # IRODS
  
  # Environments
  ENV IRODS4VERSION 1.8
  # ENV IRODS4VERSION 1.9
  ENV IRODSVERSION 4.$IRODS4VERSION
  ENV OSVERSION ubuntu14
  ENV IRODSFTP "ftp://ftp.renci.org/pub/irods"
  
negative.code:     rm -rf /var/lib/cache /var/lib/log
  
  # ADD services which are not so common
  RUN pip3 install --upgrade pip \
      # class as easy store of attributes
      attrs \
      # latest restful because the stable release is pretty outdated
      git+https://github.com/flask-restful/flask-restful@master \
      # authentication helpers
      pyopenssl flask-oauthlib \
      # necessary to use uwsgi
      uwsgi uwsgitop \
  