A sample nginx server block. How are assets served?

nginx.conf

server {
  listen                37.139.8.70:443 ssl;
  server_name           app.easygodiet.com;

  ssl                   on;
  ssl_certificate       /etc/ssl/app.easygodiet.com/app.easygodiet.com.crt;
  ssl_certificate_key   /etc/ssl/app.easygodiet.com/app.easygodiet.com.key;

  ssl_protocols         TLSv1 TLSv1.1 TLSv1.2;
  ssl_prefer_server_ciphers on;
  ssl_ciphers "EECDH+AESGCM:EDH+AESGCM:ECDHE-RSA-AES128-GCM-SHA256:AES256+EECDH:DHE-RSA-AES128-GCM-SHA256:AES256+EDH:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-SHA256:AES128-SHA256:AES256-SHA:AES128-SHA:DES-CBC3-SHA:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4";

  ssl_session_cache     shared:SSL:30m;
  ssl_session_timeout   30m;

  root /home/deployer/apps/shproduct/current/public;

  include includes/bot_denials;
  include includes/cors_support;

  location ~ ^/(assets)/  {
    gzip_static on;
    gzip_vary on;
    expires max;
    add_header Cache-Control public;
    access_log /dev/null;
  }

  location ~ \.(php|aspx|asp|myadmin)$ { return 444; log_not_found off; }

  try_files $uri/index.html $uri @puma;
  location @puma {
    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 https;
    proxy_set_header  Host $http_host;
    proxy_redirect    off;
    proxy_pass        http://puma;
  }

  error_page 500 502 503 504 /500.html;
  client_max_body_size 4G;
  keepalive_timeout 10;
}