nginx.conf.erb

worker_processes 1;
error_log stderr;
pid nginx.pid;
daemon off;

events {
       worker_connections 768;
} 

http {
       include mime.types;
       server {
               listen <%= ENV['PORT'] %>;
               server_name  _;
               location / {
                       root /app/;
                       index index.html;
                       <% if ENV['LOCK'] %>
                       auth_basic "Restricted";
                       auth_basic_user_file /app/.htpasswd;
                       <% end %>
               }
       }
}