anchor.diff:  ####DOCKER FILE FOR IMAGE OF TEI JENKINS SERVER####
  +
  +# Written by Martin Holmes, December 2016. #
   
   # We start from the latest Jenkins, which is based on
   # openjdk:jdk-8, which is based ultimately on debian 
  
positive.code: 
  # docker run --name teijenkins -p 8080:8080 -p 50000:50000 -v /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
  
negative.code:     make -f Makefile.gnu rnv && \
      cp rnv /usr/bin/ && \
      cd ../
  
  # Install a bunch of packages we need. This package list has been 
  # customized a little from the original 2016 builder script set,
  # because we're working with Debian Jessie instead of Ubuntu.
  # Many required packages are already installed upstream. 
  # Various tex-related packages have been added as build failures
  # revealed the need for them.
  RUN apt-get update && apt-get --yes --force-yes --no-install-recommends install ant \ 
  