fix: 헬스체크 옵션 변경

Author: sjy2335

backend/name-server/docker-compose.yml

@@ -20,7 +20,7 @@ services:
     volumes:
       - ./.env:/usr/src/app/.env
     healthcheck:
-      test: ["CMD", "nc", "-zu", "localhost", "3001"]
+      test: ["CMD", "nc", "-u", "localhost", "3001"]
       interval: 10s
       timeout: 2s
       retries: 5
@@ -35,7 +35,7 @@ services:
     volumes:
       - ./.env:/usr/src/app/.env
     healthcheck:
-      test: ["CMD", "nc", "-zu", "localhost", "3002"]
+      test: ["CMD", "nc", "-u", "localhost", "3002"]
       interval: 10s
       timeout: 2s
       retries: 5