anchor.diff:  RUN a2dissite 000-default
   
   RUN gpasswd -a www-data users
  -RUN usermod -s /bin/bash www-data
   
   ENV CYBER_DOJO_RUNNER_CLASS DockerDataContainerRunner
   CMD ["/usr/sbin/apache2ctl", "-DFOREGROUND" ]
  
positive.code: # Instructions for using this Dockerfile to create a cyber-dojo
  # server inside a docker container.
  #
  # 1. Setup the katas/ folder on the host
  # --------------------------------------
  # $ sudo mkdir -p /var/www/cyber-dojo/katas/
  # $ sudo chmod g+s /var/www/cyber-dojo/katas/
  # $ sudo chown -R 33:33 /var/www/cyber-dojo/katas/
  #
  # 2. Pull the language+test images you want
  # -----------------------------------------
  # $ docker pull cyberdojofoundation/gcc_assert
  # $ docker pull ...
  #
  # 3. Build the image from this Dockerfile
  # ---------------------------------------
  # $ docker build -t cyberdojofoundation/server:1.0 .
  #
  # 4. Run the image
  # ----------------
  # This needs a data-container for katas/
  # See docker_images_katas folder.
  
negative.code: #              --name=cyber-dojo \
  #              -p 80:80 -p 443:443 cyberdojofoundation/server:1.0
  #
  # 4. Refresh the caches inside the container
  # ------------------------------------------
  # This will make the images pulled in step 1 visible.
  # $ docker exec cyber-dojo bash -c /var/www/cyber-dojo/caches/refresh_all.sh
  #
  # 5. Find it's IP address on MacOSX Docker-Quickstart-Terminal
  # ------------------------------------------------------------
  # $ docker-machine ip default
  
  