anchor.diff:  # define a volume for the database
   VOLUME ["/var/lib/postgresql/9.2/main"]
   
  -CMD ["/start"]
  +CMD ["/start"]
positive.code: ENV USERNAME docker
  ENV PASS d0cker
  
  # update apt sources
  RUN echo "deb http://de.archive.ubuntu.com/ubuntu/ quantal main universe multiverse" > /etc/apt/sources.list
  
  # you may use the hetzner mirror if building on a hetzner server:
  #RUN echo "deb ftp://mirror.hetzner.de/ubuntu/packages quantal main restricted universe multiverse" > /etc/apt/sources.list
  
  # update the package repository
  RUN apt-get update
  
  RUN DEBIAN_FRONTEND=noninteractive apt-get install -y curl psmisc
  
  # install Dockyard
  RUN curl -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
  
negative.code: FROM ubuntu:latest
  MAINTAINER Ullrich Schäfer <ullrich@seidbereit.de>
  
  # expose database port
  