test

server {
  listen 80 default_server;
  listen [::]:80 default_server;
  server_name  localhost;

  # Load configuration files for the default server block.
  include /etc/nginx/default.d/*.conf;

  location / {
    proxy_pass http://localhost:3000;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
  }
}