add postgres with ssl

postgres/entrypoint.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+chmod 0400 /cert.pem
+chown postgres:postgres /cert.pem
+
+chmod 0400 /key.pem
+chown postgres:postgres /key.pem
+
+exec "$@"

postgres/postgresql.conf

@@ -0,0 +1,4 @@
+ssl = on
+ssl_cert_file = '/cert.pem'
+ssl_key_file = '/key.pem'
+listen_addresses = '0.0.0.0'