nginx配置如何配置？将端口8082变为8081 请写出完整server

{ server { listen 8081; server_name example.com;

location / {
  proxy_pass http://localhost:8082;
  proxy_set_header Host $host;
  proxy_set_header X-Real-IP $remote_addr;
  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}

} }