Can I provide hostname as a parameter for Postgres Docker image ?

Issue

• Following the process described in document it would be very convenient to use -h option for postgres.
• At the moment we run multiple postgres instances on every host like this :

[root@xxxxxx ~]#  ps -ef | grep postgresql92
postgres 18333     1  0 Jun14 ?        00:00:21 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/bom/pgcluster/data -h xxxxx -p 5432 -k /app/bom/tmp
root     34880 34844  0 15:21 pts/1    00:00:00 grep postgresql92
postgres 36168     1  0 Jun26 ?        00:00:37 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/qmsone/pgcluster/data -h xxxxx -p 5432 -k /app/qmsone/tmp
postgres 38828     1  0 Jun14 ?        00:00:20 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/csa/pgcluster/data -h xxxxx -p 5432 -k /app/csa/tmp
postgres 39118     1  0 Jun14 ?        00:00:21 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/digg/pgcluster/data -h xxxxx -p 5432 -k /app/digg/tmp
postgres 39468     1  0 Jun14 ?        00:00:21 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/imx/pgcluster/data -h xxxxx-p 5432 -k /app/imx/tmp
postgres 41225     1  0 Jun14 ?        00:00:22 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/link/pgcluster/data -h xxxx. -p 5432 -k /app/link/tmp
postgres 42147     1  0 Jun14 ?        00:00:20 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/lti/pgcluster/data -h xxxxx. -p 5432 -k /app/lti/tmp
postgres 42173     1  0 Jun14 ?        00:00:22 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/sps/pgcluster/data -h xxxxx -p 5432 -k /app/sps/tmp
postgres 42274     1  0 Jun14 ?        00:00:21 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/malerts/pgcluster/data -h xxxxx -p 5432 -k /app/malerts/tmp
postgres 42476     1  0 Jun14 ?        00:07:02 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/chart/pgcluster/data -h xxxxx -p 5432 -k /app/chart/tmp
postgres 42662     1  0 Jun14 ?        00:00:21 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/mtrd/pgcluster/data -h xxxxx -p 5432 -k /app/mtrd/tmp
postgres 43034     1  0 Jun14 ?        00:00:59 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/opus/pgcluster/data -h xxxxx -p 5432 -k /app/opus/tmp
postgres 43055     1  0 Jun14 ?        00:00:20 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/oats/pgcluster/data -h xxxxx -p 5432 -k /app/oats/tmp
postgres 45435     1  0 Jun14 ?        00:01:39 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/mfadmn/pgcluster/data -h xxxxx -p 5432 -k /app/mfadmn/tmp
postgres 46472     1  0 Jun14 ?        00:03:29 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/portbld/pgcluster/data -h xxxxx -p 5432 -k /app/portbld/tmp
postgres 50147     1  0 Jun14 ?        00:00:20 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/small/pgcluster/data -h xxxxx -p 5432 -k /app/small/tmp
postgres 50435     1  0 Jun14 ?        00:00:41 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/smr/pgcluster/data -h xxxxxx -p 5432 -k /app/smr/tmp
postgres 51049     1  0 Jun14 ?        00:00:21 /opt/rh/postgresql92/root/usr/bin/postgres -D /app/finpln/pgcluster/data -h xxxxxx -p 5432 -k /app/finpln/tmp