这么配置：
upstream gitlab {
server <DOMAIN>:80;
}
server {
listen 8088;
location / {
client_max_body_size 50m;
proxy_redirect off;
proxy_set_header Host $host:$server_port;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
# 一定注意下一行最后那个/ 可以代理全站，没有/就会出现问题
proxy_pass http://gitlab/;
index index.html index.htm;
}
access_log /var/log/gitlab-access.log;
}
