Add specs configuration

spec/dummy/config/application.rb

@@ -0,0 +1,18 @@
+require_relative 'boot'
+
+require 'rails/all'
+
+Bundler.require(*Rails.groups)
+
+module Dummy
+  class Application < Rails::Application
+    # Initialize configuration defaults for originally generated Rails version.
+    config.load_defaults 6.0
+
+    # Settings in config/environments/* take precedence over those specified here.
+    # Application configuration can go into files in config/initializers
+    # -- all .rb files in that directory are automatically loaded after loading
+    # the framework and any gems in your application.
+  end
+end
+