anchor.diff:      ; do pip3 install $x; done \
       && rm -Rf /root/.cache/pip
   
  +# Astrometry.net
   RUN mkdir -p /src \
       && export PYTHON=python3 \
       && export PYTHON_SCRIPT="/usr/bin/env python3" \
  
positive.code:     && make install INSTALL_DIR=/usr/local \
      && rm -R $(find . -name "*.o" -o -name "*.so")
  
  # Legacypipe
  RUN cd /src \
      && git clone http://github.com/legacysurvey/legacypipe.git legacypipe
  
  # Yeah no, this needs some work still
  #    && python3 setup.py install
  
negative.code:     && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
  
  # multiprocessing.pool from official python 3.6.8 release
  # The python 3.6.7 version shipped in current Ubuntu 18.04 breaks the
  # Astrometry.net "timingpool" class.  This changed from 3.6.6 to 3.6.7 and
  # then was reverted in 3.6.8.
  COPY pool.py /usr/lib/python3.6/multiprocessing/pool.py
  
  # Python related stuff
  RUN echo "../site-packages" > /usr/local/lib/python3.6/dist-packages/site-packages.pth
  #RUN pip3 install --upgrade pip && \
  RUN for x in \
      setuptools \
      wheel \
  