anchor.diff:  RUN groupadd -r postgres --gid=999 && useradd -r -g postgres --uid=999 postgres
   
   ## CLOUDUNIT :: BEGINNING
  -
   ENV CU_MODULE_PORT 5432
   ENV CU_DEFAULT_LOG_FILE " "
   ENV CU_LOGS " "
  -
  -# add custom scripts
   ADD scripts /opt/cloudunit/scripts
   RUN chmod +x /opt/cloudunit/scripts/*
  -
   ## CLOUDUNIT :: END
  -
  -
   
   # grab gosu for easy step-down from root
   ENV GOSU_VERSION 1.7
  
positive.code: 	&& apt-get install -y \
  		postgresql-$PG_MAJOR=$PG_VERSION \
  		postgresql-contrib-$PG_MAJOR=$PG_VERSION \
  	&& rm -rf /var/lib/apt/lists/*
  
  # make the sample config easier to munge (and "correct by default")
  
negative.code: 
  ENV PG_MAJOR 9.4
  ENV PG_VERSION 9.4.9-1.pgdg80+1
  ENV POSTGIS_MAJOR 2.1
  
  RUN echo 'deb http://apt.postgresql.org/pub/repos/apt/ jessie-pgdg main' $PG_MAJOR > /etc/apt/sources.list.d/pgdg.list
  
  