anchor.diff:  
   COPY requirements* /
   
  -RUN pip3 install -r requirements-test.txt
  +RUN pip install --no-cache-dir -r requirements-test.txt
   
   COPY sitch/ /app/sitch
  -
   
   WORKDIR /app/sitch
   
   RUN ls /app/sitch
   
  -# RUN /usr/local/bin/pypy -mpy.test \
  -RUN python3 -m pytest \
  +RUN pypy3 -m pytest \
       --cov=sitchlib \
       --cov-report term-missing \
       --profile \
  
positive.code: 
  COPY requirements* /
  
  RUN pip3 install -r requirements.txt
  
  COPY sitch/ /app/sitch
  
  
  WORKDIR /app/sitch
  
  # ENTRYPOINT ["/usr/local/bin/pypy"]
  ENTRYPOINT ["python3"]
  CMD ["/app/sitch/runner.py"]
  
negative.code: 
  ##################
  
  FROM pypy:3.6
  
  RUN apt-get update && apt-get install -y \
      curl \
      expect \
  