docker - nginx将80端口转发到registry:2上不能push镜像

我是这样启动的registry

docker run -d -p 6000:5000 --restart=always --name registry -e STANDALONE=true -v /registry6000:/var/lib/registry registry:2

nginx这样转发的

server {
    listen 80;
    server_name i.com;
    location / {
        proxy_pass http://127.0.0.1:6000;
    }
}

现在是直接i.com:6000可以推送，我想直接i.com也可以推送，结果提示
Error: Status 405 trying to push repository registry