anchor.diff:  # Create folder
   WORKDIR "/work"
   
  -COPY start.sh /tmp/start.sh
  -
   # Start Notebook
   CMD jupyter notebook
  
positive.code:     mkdir -p $CONDA_DIR && \
      chown $NB_USER $CONDA_DIR
  
  USER $NB_USER
  
  # Setup local home directory
  
negative.code:     apt-get clean && \
      rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
  
  # Declare environment variables
  ENV CONDA_DIR /opt/conda
  ENV PATH $CONDA_DIR/bin:$PATH
  ENV NB_USER local
  