anchor.diff:  # ClassCat/Spark Dockerfile
   #   Maintained by ClassCat Co.,Ltd ( http://www.classcat.com/ )
   ########################################################################
  +
  +#--- HISTORY -----------------------------------------------------------
  +# 04-sep-15 : fixed.
  +#
  +#--- TODO --------------------------------------------------------------
  +# 04-sep-15 : should be run as non-root.
  +#
  +#--- DESCRIPTION -------------------------------------------------------
  +# 04-sep-15 : python-numpy, python-matplotlib, python-nose : o.k.
  +#
  +#-----------------------------------------------------------------------
   
   ENV DEBIAN_FRONTEND noninteractive
   
  
positive.code: #EXPOSE 22 80
  
  CMD /opt/cc-init.sh; /usr/bin/supervisord -c /etc/supervisor/supervisord.conf
  
negative.code:   && tar xfz spark-1.4.1-bin-hadoop2.6.tgz \
    && ln -s spark-1.4.1-bin-hadoop2.6 spark
  
  # ipython & notebook & libraries
  RUN apt-get install -y ipython ipython-notebook \
    && apt-get install -y python-scipy python-pandas python-sympy
  
  WORKDIR /opt
  COPY assets/cc-init.sh /opt/cc-init.sh
  