anchor.diff:    && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
   
  -# Install the JupyterLab extension for ipyleaflet (currently not available on npm).
  -RUN git clone https://github.com/tylere/ipyleaflet.git \
  -  && jupyter labextension install ipyleaflet/jslab \
  -  && rm -fr ipyleaflet
  -
   # Install the Earth Engine Python API.
   # This is installed as the last step because the package is updated often.
   RUN pip install earthengine-api
  
positive.code: FROM jupyter/minimal-notebook
  
  MAINTAINER Tyler Erickson <tylere@google.com>
  
  USER root
  
  
negative.code:              libgif-dev \
               libcairo2-dev \
               pkg-config \
    && pip install ipywidgets==7.0.3 \
    && jupyter nbextension enable --py --sys-prefix widgetsnbextension  \
    && jupyter labextension install @jupyter-widgets/jupyterlab-manager@0.29.3 \
    && pip install ipyleaflet==0.5.1 \
    && jupyter nbextension enable --py --sys-prefix ipyleaflet \
    && jupyter labextension install jupyter-leaflet@0.5.0 \
    && apt-get install -y --no-install-recommends \
               build-essential \
               libssl-dev \
  