fix: use absolute path for DATABASE_URL in Docker

Dockerfile

@@ -39,7 +39,7 @@ RUN mkdir -p /app/data && chmod 777 /app/data
 COPY --from=builder /app/node_modules ./node_modules
 
 # 设置数据库环境变量并初始化数据库
-ENV DATABASE_URL="file:./data/student.db"
+ENV DATABASE_URL="file:/app/data/student.db"
 RUN npx prisma db push
 
 # 复制 Prisma

docker-compose.yml

@@ -12,7 +12,7 @@ services:
       # 持久化数据库文件
       - student-data:/app/data
     environment:
-      - DATABASE_URL=file:./data/student.db
+      - DATABASE_URL=file:/app/data/student.db
       - NODE_ENV=production
     restart: unless-stopped
     healthcheck: