anchor.diff:  # Install a base set of packages from the default repo
   COPY yum-packages.list /tmp/yum.packages.list
   RUN chmod +r /tmp/yum.packages.list
  -RUN yum install -y `cat /tmp/yum.packages.list`
  +RUN yum install -y `cat /tmp/yum.packages.list`; exit 0
   
   # Install subversion, this needs to be done this way as it tries to install a broken package
   RUN yum install -y --nodeps subversion
  
positive.code: ENV BUILD_USER_GROUP users
  ENV BUILD_DOCKER_GROUP docker
  ENV BUILD_DOCKER_GROUP_ID 1001
  ENV UMPIRE_VERSION 0.4.4
  
  # Create the docker group
  RUN groupadd -g $BUILD_DOCKER_GROUP_ID $BUILD_DOCKER_GROUP
  
negative.code:     python2.7 ./get-pip.py
  
  # Install umpire
  ENV UMPIRE_VERSION 0.5.0a2
  RUN pip2.7 install umpire==${UMPIRE_VERSION}
  
  # Create the folder we use for Jenkins workspaces across all nodes
  