sso应用通过nginx配置反向代理后,原来的跨域失效了

我这边有一个 8081/sso 的服务, 其他的服务在浏览器端(跨域的)访问或者操作它的cookie都没问题,
但当我 通过nginx配置了下 sso ,, 变成了 80/sso ,
然后别的服务就访问不到 soo 的cookie了，

    location /sso{
        proxy_pass http://localhost:8081;
        proxy_set_header X-Real-IP $remote_addr;
    }

请问这个配置要怎么改呀？
我试过改成这样, 也没起作用

location /sso{
        add_header 'Access-Control-Allow-Origin' '*';
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Cookie $http_cookie;
        proxy_pass http://localhost:8081;
        proxy_cookie_domain domino.server nginx.server;
        proxy_redirect off;
    }

https://blog.csdn.net/we_shell/article/details/45153885