feat: multiple database and user in postgres

postgres/create_user.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+set -e
+
+POSTGRES="psql --username ${POSTGRES_USER}"
+
+echo "Creating database role: [${BACKEND_USER}]"
+
+$POSTGRES <<-EOSQL
+CREATE USER ${BACKEND_USER} WITH CREATEDB PASSWORD '${BACKEND_PASSWORD}';
+EOSQL
+
+
+echo "Creating database role: ${KEYCLOAK_USER}"
+$POSTGRES <<-EOSQL
+CREATE USER ${KEYCLOAK_USER} WITH CREATEDB PASSWORD '${KEYCLOAK_PASSWORD}';
+EOSQL