Fix script so that it works in current postgres container.

Author: jpsecher

create-multiple-postgresql-databases.sh

@@ -10,10 +10,10 @@ function create_user_and_database() {
 	    CREATE USER $database;
 	    CREATE DATABASE $database;
 	    GRANT ALL PRIVILEGES ON DATABASE $database TO $database;
-	EOSQL
+EOSQL
 }
 
-if [ $POSTGRES_MULTIPLE_DATABASES ]; then
+if [ -n "$POSTGRES_MULTIPLE_DATABASES" ]; then
 	echo "Multiple database creation requested: $POSTGRES_MULTIPLE_DATABASES"
 	for db in $(echo $POSTGRES_MULTIPLE_DATABASES | tr ',' ' '); do
 		create_user_and_database $db