anchor.diff:  #     docker run -d -v ~/volumes/postgres/:/mnt/postgres/ postgis
   #
   # References:
  +# * http://docs.docker.io/en/latest/examples/postgresql_service/
   # * https://github.com/orchardup/docker-postgresql/blob/master/Dockerfile
   # * http://www.ubuntuupdates.org/ppa/postgresql
   
   FROM ubuntu:precise
   MAINTAINER Chris <c@crccheck.com>
   
  +ENV DEBIAN_FRONTEND noninteractive
   
   RUN apt-get update
   RUN apt-get install -y wget && apt-get clean
  
positive.code: RUN echo "deb http://archive.ubuntu.com/ubuntu precise universe" >> /etc/apt/sources.list
  
  RUN apt-get update
  RUN apt-get install -y postgresql-9.2-postgis-2.0 && apt-get clean
  
  # add configuration file(s)
  ADD conf /etc/postgresql/9.2/main
  RUN chown postgres:postgres -R /etc/postgresql/9.2/main/
  
  ADD start.sh /
  RUN sh /start.sh
  # CMD ["sh", "/usr/local/bin/start.sh"]
  
  # useful reference:
  # https://github.com/orchardup/docker-postgresql
  
negative.code: # ## Postgresql 9.3 and Postgis 2.1
  #
  # A Postgresql 9.3 + Postgis 2.1 image that supports external volumes. Runs on
  # port 5432.
  #
  # ### Example Usage
  