add health endpoing

Author: manuelmeurer

app/controllers/application_controller.rb

@@ -4,4 +4,10 @@ class ApplicationController < ActionController::Base
   def home
     render "/home"
   end
+
+  def health
+    Doc.count
+    expires_now
+    head :ok
+  end
 end

config/routes.rb

@@ -19,4 +19,6 @@
   get ":sitemap", sitemap: /sitemap[A-Za-z\d.]*/, to: redirect { "https://#{ENV.fetch "CLOUDFLARE_R2_BUCKET_URL"}#{_2.path}" }
 
   root "application#home"
+
+  get :health, controller: "application"
 end