https://git.demo.clearseve.com:8888 重定向完就是 https://git.demo.clearseve.com/xxx
修改配置文件gitlab.rb
nginx['proxy_set_headers'] = { "Host" => "<YOUR HOST>:<YOUR PORT>" }
例子
nginx['proxy_set_headers'] = { "Host" => "git.demo.clearseve.com:8888" }
这样修改的话, 再重定向就没有问题了