anchor.diff:  	    openjdk-8-jdk-headless \
   	    && \
       apt-get purge && apt-get clean
  -    
  +
   RUN echo "en_US.UTF-8 UTF-8" > /etc/locale.gen && \
       locale-gen
   
  
positive.code: RUN pip install --no-cache-dir nbgitpuller==0.3 && \
  	jupyter serverextension enable  --sys-prefix --py nbgitpuller
  
  # gmaps notebook extension 
  # for ls 88-4, economic development connector
  RUN pip install --no-cache-dir gmaps && \
    jupyter nbextension enable --py --sys-prefix gmaps
  
negative.code: 
  RUN pip install --no-cache-dir \
        notebook==5.1.0 \
        jupyterhub==0.8.1 \
        ipywidgets==6.0.0 \
        jupyterlab==0.26.5
  
  