chore: Update Docker dev setup

spec/dummy/config/environments/test.rb

@@ -46,4 +46,8 @@ Rails.application.configure do
 
   # Raises error for missing translations.
   # config.action_view.raise_on_missing_translations = true
+
+  ###
+
+  config.active_support.to_time_preserves_timezone = :zone if Gem::Version.new(Rails.version) >= Gem::Version.new('8.0')
 end