anchor.diff:  
   VOLUME ["${RASA_NLU_HOME}", "${RASA_NLU_PYTHON_PACKAGES}"]
   
  -COPY . ${RASA_NLU_HOME}
  -
  -WORKDIR ${RASA_NLU_HOME}
  -
   # Run updates, install basics and cleanup
   # - build-essential: Compile specific dependencies
   # - git-core: Checkout git repos
  
positive.code: 
  ENTRYPOINT ["./entrypoint.sh"]
  CMD ["help"]
  
  
negative.code:   build-essential \
    git-core && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
  
  WORKDIR ${RASA_NLU_HOME}
  
  COPY ./requirements.txt requirements.txt
  
  # Split into pre-requirements, so as to allow for Docker build caching
  RUN pip install $(tail -n +2 requirements.txt)
  
  COPY . ${RASA_NLU_HOME}
  
  RUN python setup.py install
  
  