anchor.diff:  COPY nodesource.list /etc/apt/sources.list.d/nodesource.list
   COPY nodesource-key.asc /tmp/nodesource-key.asc
   RUN apt-key add /tmp/nodesource-key.asc
  +
  +# TODO: remove me when apt can find our packages
  +RUN echo 91.189.91.26 security.ubuntu.com >> /etc/hosts
   
   RUN apt-get update --yes
   RUN apt-get install --yes -qq \
  
positive.code:     locale-gen
  
  # for nbconvert
  RUN apt-get install --yes -qq --fix-missing \
              pandoc \
              texlive-xetex \
              texlive-fonts-recommended \
              texlive-generic-recommended
  
  RUN apt-get install --yes -qq --fix-missing \
              # for LS88-5 and modules basemap
              libspatialindex-dev \
              libgeos-dev \
  
negative.code:             fsl-complete
  
  # install R, packages, and RStudio dependencies
  RUN apt-get install --yes -qq \
              libapparmor1 \
              libgdal-dev \
              libproj-dev \
  