修复docker-compose-custom.yml构建配置

- 添加build配置段，指定Dockerfile构建镜像
- 修复镜像构建问题，现在可以正确编译最新代码
- 保持所有环境变量和网络配置不变

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

docker-compose-custom.yml

@@ -2,6 +2,9 @@ version: '3.4'
 
 services:
   new-api-custom:
+    build:
+      context: .
+      dockerfile: Dockerfile
     image: new-api-custom:latest
     container_name: new-api-custom
     restart: always