title: nginx, passenger only showing root page, all other routes fail
body: <p>Nginx + passenger is only showing the root page / path, all other routes fail with 404 Not Found.
  I know nginx and passenger must be running to correctly bring up the root path. Here's the entry for sites-available:</p>
  
  <pre><code>    server {
        listen 80;
        server_name staging.redacted.com; # Replace this with your site's domain.
  
        passenger_enabled on;
        passenger_app_env staging;
  
        keepalive_timeout 300;
  
        client_max_body_size 4G;
  
        root /var/www/staging.redacted.com/current/public; # Set this to the public folder location of your Rails application.
  
        #try_files $uri/index.html $uri.html $uri;
        try_files $uri $uri/ =404;
  
      }
  </code></pre>
  
  <p>routes.rb - even though they all work and pass their specs.</p>
  
  <pre><code>    Rails.application.routes.draw do
  
        resources :users
  
        resources :brand_api_keys
  
        resources :ir_service_buckets
        resources :ir_service_images
        resources :ir_services do
          resources :ir_service_buckets do
            resources :ir_service_images
          end
        end
        resources :devices do
          resources :scans
        end
        resources :images do
          resources :scans
        end
        resources :campaigns do
          resources :images
        end
        resources :agent_brands
        resources :brands do
          resources :brand_api_keys
          resources :ir_service_buckets do
            resources :ir_service_images
          end
          resources :agent_brands
          resources :campaigns
        end
        resources :agents do
          resources :brand_api_keys
          resources :agent_brands
        end
  
        root 'agents#index'
      end
  </code></pre>