anchor.diff:  # docker run --name teijenkins -p 8080:8080 -p 50000:50000 -v /home/mholmes/WorkData/tei/jenkins_home:/var/jenkins_home jenkins
   
   FROM jenkins:latest
  + 
  +# Variables we'll use later on.
  +ARG JENKINS_USER_NAME="TEI Council"
  +ARG JENKINS_USER_EMAIL="tei-council@lists.tei-c.org"
   
   # Need to switch to root user to install stuff.
   USER root
  
positive.code: RUN mkdir Jenkins
  RUN git clone https://github.com/TEIC/Jenkins.git Jenkins
  
  # Now we try installing Jenkins plugins.
  # Recommended approach from hub.docker.com jenkins page:
  # provide a file listing all the plugins you want to install.
  
negative.code: # Copy the jobs into place.
  COPY jobs/ /var/jenkins_home/jobs/
  
  # That should be it.
  