anchor.diff:  
   # patternfly1
   RUN curl https://copr.fedoraproject.org/coprs/patternfly/patternfly1/repo/fedora-21/patternfly-patternfly1-fedora-21.repo > /etc/yum.repos.d/patternfly-patternfly1-fedora-21.repo
  +RUN curl http://www.graphviz.org/graphviz-rhel.repo > /etc/yum.repos.d/graphviz-rhel.repo
   
   # solve dependencies
   RUN yum -y upgrade && yum install -y \
  
positive.code: # docker build -t <YOUR_NAME>/pdc <the directory your Dockerfile is located>
  # 
  # 2. Running the container
  # 	2.1 To operate on the container interactively (with a terminal)
  # 	docker run -it -p 10000:8000 <YOUR_NAME>/pdc
  # 
  # 	2.2 To run the container in daemon mode
  # 	docker run -d -p 10000:8000 <YOUR_NAME>/pdc
  # 
  # 
  # 3. Check the addresses
  
negative.code: # 	docker ps -l --> PORTS
  # 
  # 4. Access it
  # visit <DOCKER_HOST:PORTS> on your web browser
  # 
  # 5. Edit code and see changes
  # save after editing code in your $PWD directory and see changes will happen in the container (changes need more time to take effect than in local env)
  
  FROM fedora:21
  MAINTAINER Zhikun Lao <zlao@redhat.com>
  