Hotfix: postgres pg_isready healthcheck fix 2

docker-compose.yml

@@ -24,7 +24,7 @@ services:
     ports:
       - "127.0.0.1:${POSTGRES_PORT}:5432"
     healthcheck:
-      test: ["CMD", "pg_isready", "-d",  "$${POSTGRES_DB}", "-U", "$${POSTGRES_USER}"]
+      test: ["CMD", "pg_isready -d $${POSTGRES_DB:-postgres} -U $${POSTGRES_USER:-postgres}"]
       interval: 10s
       timeout: 5s
       retries: 10