혹시 몰라 남겨둡니다.. npm 에 추가하시면 되요. 

location / {
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 X-Forwarded-Proto $scheme;
proxy_pass            http://$server:$port$request_uri;
client_max_body_size 0;
proxy_read_timeout 90;
}