Try exposing the port and restarting postgres

I still can't get the django client to be able to connect to this
instance

Dockerfile

@@ -25,15 +25,17 @@ RUN apt-get update \
 RUN pip install --upgrade pip virtualenv
 
 # setup postgresql database and user.
-# We don't expose the port, but allow all incomming connections
 USER postgres
 RUN echo "host all  all    0.0.0.0/0  md5" >> /etc/postgresql/11/main/pg_hba.conf
 RUN echo "listen_addresses='*'" >> /etc/postgresql/11/main/postgresql.conf
-RUN    /etc/init.d/postgresql start \
-&& psql -c "CREATE USER ctest WITH SUPERUSER PASSWORD 'coveragetest123';ALTER USER ctest CREATEDB;"
+RUN service postgresql restart 
+RUN psql -c "CREATE USER ctest WITH SUPERUSER PASSWORD 'coveragetest123';ALTER USER ctest CREATEDB;"
+RUN createdb -O ctest demo
 USER root
 
 
+EXPOSE 5432
+
 COPY entrypoint.sh /
 RUN chmod +x /entrypoint.sh
 ENTRYPOINT ["/entrypoint.sh"]