Borg Backup is an interesting backup option for Linux (https://www.borgbackup.org/) and also works inside a Domino container with a local or remote repository.
The first integration with Domino Backup used bash scripts and Borg commands. But this had limitations due to the way Borg handles backups.
Each database was stored in a separate repository. I have been looking for direct integration to avoid this overhead and store all backup data into a single backup.
There is a newer option to import tar data directly into Borg as a stream -> https://borgbackup.readthedocs.io/en/stable/usage/tar.html.
This is a companion discussion topic for the original entry at https://blog.nashcom.de/nashcomblog.nsf/dx/introducing-domino-borg-backup-integration-v2.htm