chore: Update Docker dev setup

spec/dummy/config/environments/development.rb

@@ -59,4 +59,8 @@ Rails.application.configure do
   # Use an evented file watcher to asynchronously detect changes in source code,
   # routes, locales, etc. This feature depends on the listen gem.
   # config.file_watcher = ActiveSupport::EventedFileUpdateChecker
+
+  ###
+
+  config.active_support.to_time_preserves_timezone = :zone if Gem::Version.new(Rails.version) >= Gem::Version.new('8.0')
 end