Add action HomeController#show

app/controllers/home_controller.rb

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+class HomeController < ApplicationController
+  # GET /
+  def show; end
+end

config/routes.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 Rails.application.routes.draw do
-  root to: ->(_) { [200, {}, ['Hello, World!']] }
+  root to: 'home#show'
 
   resources :membership_applications, only: :new
 end

spec/requests/root_spec.rb

@@ -10,8 +10,4 @@ RSpec.describe 'GET /' do
   specify do
     expect(response).to have_http_status :ok
   end
-
-  specify do
-    expect(response.body).to match 'Hello, World!'
-  end
 end