anchor.diff:      # xvfbwrapper with dependencies
       apt-get install -y xvfb && \
       pip install xvfbwrapper && \
  +    python -c "import torch; print('rosbo-torch:', torch.__version__)" && \
       /tmp/clean-layer.sh
   
   RUN pip install mpld3 && \
  
positive.code: COPY --from=tensorflow_whl /tmp/tensorflow_cpu/*.whl /tmp/tensorflow_cpu/
  RUN pip install /tmp/tensorflow_cpu/tensorflow*.whl && \
      rm -rf /tmp/tensorflow_cpu && \
      /tmp/clean-layer.sh
  
  RUN apt-get install -y libfreetype6-dev && \
  
negative.code:     pip install allennlp && \
      # b/149359379 remove once allennlp 1.0 is released which won't cause a spacy downgrade.
      pip install spacy==2.2.3 && python -m spacy download en && python -m spacy download en_core_web_lg && \
      python -c "import torch; print('rosbo-torch:', torch.__version__)" && \
      /tmp/clean-layer.sh
  
      ###########
  