anchor.diff: -FROM base:ubuntu-quantal
  +FROM ubuntu:latest
   MAINTAINER Ullrich Schäfer <ullrich@seidbereit.de>
   
   # expose database port
  
positive.code: # define a volume for the database
  VOLUME ["/var/lib/postgresql/9.2/main"]
  
  CMD ["/start"]
  
negative.code: ENV USERNAME docker
  ENV PASS d0cker
  
  # update the package repository
  RUN apt-get update
  
  RUN DEBIAN_FRONTEND=noninteractive apt-get install -y curl psmisc zlib1g-dev libssl-dev
  
  # install Dockyard
  RUN curl -L -o /usr/local/bin/dockyard https://raw.github.com/dynport/dockyard/master/dockyard
  RUN chmod 0755 /usr/local/bin/dockyard
  
  RUN dockyard install postgresql 9.2.4
  