diff --git a/.env.example b/.env.example
index b6f586b..a28249d 100644
--- a/.env.example
+++ b/.env.example
@@ -5,7 +5,7 @@
 # WARNING: .env 已被加入 .gitignore，请勿提交真实密钥
 
 # 数据库连接 (必填)
-DATABASE_URL="mysql://user:password@host:3306/zhuiguang_ai?charset=utf8mb4"
+DATABASE_URL="mariadb://user:password@host:3306/zhuiguang_ai?charset=utf8mb4"
 
 # NextAuth 配置 (必填)
 NEXTAUTH_URL="http://localhost:8301"
diff --git a/prisma.config.ts b/prisma.config.ts
index b847ba5..9e62bf3 100644
--- a/prisma.config.ts
+++ b/prisma.config.ts
@@ -1,6 +1,5 @@
-// This file was generated by Prisma, and assumes you have installed the following:
-// npm install --save-dev prisma dotenv
-import "dotenv/config";
+// 运行时由 Dockerfile build-arg 注入 DATABASE_URL
+// 本地开发时手动 export DATABASE_URL 或用 .env 加载（next.config.mjs 处理）
 import { defineConfig } from "prisma/config";
 
 export default defineConfig({