anchor.diff:  RUN chmod 755 /sbin/entrypoint.sh
   
   EXPOSE 5432/tcp
  -VOLUME ["${PG_HOME}", "${PG_RUNDIR}"]
   WORKDIR ${PG_HOME}
   ENTRYPOINT ["/sbin/entrypoint.sh"]
  
positive.code: FROM sameersbn/ubuntu:14.04.20170123
  MAINTAINER sameer@damagehead.com
  
  ENV PG_APP_HOME="/etc/docker-postgresql"\
      PG_VERSION=9.6 \
      PG_USER=postgres \
      PG_HOME=/var/lib/postgresql \
  
negative.code: ENV PG_BINDIR=/usr/lib/postgresql/${PG_VERSION}/bin \
      PG_DATADIR=${PG_HOME}/${PG_VERSION}/main
  
  RUN apt-get update \
   && DEBIAN_FRONTEND=noninteractive apt-get install -y gnupg gnupg-curl \
   && apt-key adv --fetch-keys https://www.postgresql.org/media/keys/ACCC4CF8.asc \
   && echo 'deb http://apt.postgresql.org/pub/repos/apt/ xenial-pgdg main' > /etc/apt/sources.list.d/pgdg.list \
   && apt-get update \
   && DEBIAN_FRONTEND=noninteractive apt-get install -y acl sudo \
        postgresql-${PG_VERSION} postgresql-client-${PG_VERSION} postgresql-contrib-${PG_VERSION} \
   && ln -sf ${PG_DATADIR}/postgresql.conf /etc/postgresql/${PG_VERSION}/main/postgresql.conf \
   && ln -sf ${PG_DATADIR}/pg_hba.conf /etc/postgresql/${PG_VERSION}/main/pg_hba.conf \
  