chore(docker-compose): set default redis password

Enable Redis requirepass in the compose template and embed the matching
credential in REDIS_CONN_STRING, aligning with the existing PostgreSQL
default password pattern so out-of-the-box deployments are not left with
an unauthenticated Redis instance.

docker-compose.yml

@@ -28,7 +28,7 @@ services:
     environment:
       - SQL_DSN=postgresql://root:123456@postgres:5432/new-api # ⚠️ IMPORTANT: Change the password in production!
 #      - SQL_DSN=root:123456@tcp(mysql:3306)/new-api  # Point to the mysql service, uncomment if using MySQL
-      - REDIS_CONN_STRING=redis://redis
+      - REDIS_CONN_STRING=redis://:123456@redis:6379 # ⚠️ IMPORTANT: Change the password in production!
       - TZ=Asia/Shanghai
       - ERROR_LOG_ENABLED=true # 是否启用错误日志记录 (Whether to enable error log recording)
       - BATCH_UPDATE_ENABLED=true  # 是否启用批量更新 (Whether to enable batch update)
@@ -56,6 +56,7 @@ services:
     image: redis:latest
     container_name: redis
     restart: always
+    command: ["redis-server", "--requirepass", "123456"]  # ⚠️ IMPORTANT: Change this password in production!
     networks:
       - new-api-network