anchor.diff:          && git fetch dstn && git checkout handle-oom \
   	&& pip install .
   
  +ENV LEGACYPIPE_DIR /src/legacypipe/py
  +
   # update legacypipe
   RUN cd /src/legacypipe && git pull \   
  -    && git describe && echo DR9.8.3 && \
  +    && git describe && echo DR9.9.0 && \
     python    -m compileall /src/legacypipe/py/{legacypipe,legacyzpts} && \
     python -O -m compileall /src/legacypipe/py/{legacypipe,legacyzpts}
   
  -ENV LEGACYPIPE_DIR /src/legacypipe/py
  -
  
positive.code: 
  # Pip installs -- built from source
  RUN pip --no-cache-dir install photutils
  RUN pip --no-cache-dir install fitsio==1.1.4
  
  RUN /sbin/ldconfig
  
  
negative.code: # The Tractor
  RUN git clone http://github.com/dstndstn/tractor.git tractor \
      && cd tractor \
      && git checkout dr10.0 \
      && python3 setup-cython.py --with-ceres install --home /usr/local \
      && make version && cp tractor/version.py /usr/local/lib/python/tractor/ \
      && rm -R $(find . -name "*.o" -o -name "*.so") \
  