anchor.diff:                 libc6-i386 unzip mercurial libgmp-dev libboost-dev
   
   # Specify which version we are building against
  -ARG PSQL_VERSION=9.6
  +ARG PSQL_VERSION=11
   ENV PSQL_VERSION=$PSQL_VERSION
   
   RUN apt-get update &&\
  -    apt-get -y install zlib1g-dev postgresql-${PSQL_VERSION} postgresql-server-dev-${PSQL_VERSION} postgresql-contrib-${PSQL_VERSION}
  +    apt-get -y install zlib1g-dev postgresql-${PSQL_VERSION} postgresql-server-dev-${PSQL_VERSION}
   
   # Ensure a sane environment
   ENV LANG=C.UTF-8 LC_ALL=C.UTF-8 DEBIAN_FRONTEND=noninteractive
  
positive.code: FROM debian:latest
  LABEL maintainer pierre@senellart.com
  
  # needed to build provsql the tools + libc6-i386 for running c2d
  
negative.code: 
  USER root
  RUN apt-get update &&\
      apt-get -y install apache2 libapache2-mod-php php-pgsql graphviz libgraph-easy-perl
  
  CMD /bin/bash $GITHUB_WORKSPACE/docker/demo.sh
  EXPOSE 80
  