Doctrine ORM is not provided by default. If you want to use it, you will need to add
Limit of archived Content item versions
default_version_archive_limit controls the number of archived versions per Content item that will be stored in the repository, by default set to 5. This setting is configured in the following way (typically in
ezpublish: repositories: default: options: default_version_archive_limit: 10
This limit is enforced on publishing a new version and only covers archived versions, not drafts.