anchor.diff:      #Fix tornado await process
       pip uninstall -y -q tornado && \
       pip install tornado==5.1.1 && \
  -    pip install ray==0.7.0 && \
  -    pip install psutil && \
  -    pip install aiohttp && \
  -    pip install setproctitle && \
  -    pip install featuretools && \
       python3 -m ipykernel.kernelspec
   
   #spark
  
positive.code: ENV RUNTIME_EXECUTOR_MEMORY         ${RUNTIME_EXECUTOR_MEMORY}
  ENV RUNTIME_TOTAL_EXECUTOR_CORES    ${RUNTIME_TOTAL_EXECUTOR_CORES}
  ENV SPARK_HOME                      /opt/work/spark-${SPARK_VERSION}
  ENV ANALYTICS_ZOO_HOME              /opt/work/analytics-zoo/dist
  ENV JAVA_HOME                       /opt/jdk
  ENV PATH                            ${JAVA_HOME}/bin:${PATH}
  
  
negative.code:     mv spark-${SPARK_VERSION}-bin-hadoop2.7 spark-${SPARK_VERSION} && \
      rm spark-${SPARK_VERSION}-bin-hadoop2.7.tgz
  
  ADD ./download-analytics-zoo.sh /opt/work
  ADD ./start-notebook.sh /opt/work
  RUN chmod a+x /opt/work/download-analytics-zoo.sh && \
      chmod a+x /opt/work/start-notebook.sh
  RUN /opt/work/download-analytics-zoo.sh
  
  CMD ["/opt/work/start-notebook.sh"]
  