Can MAAS custom OS Images be pointed to an external repo?

Hello,

The way we upload Custom OS images to MAAS today is using “maas boot-resources create” command.

Is there a way to upload custom images into an external repo like jfrog artifactory and just configure MAAS Images to point there?

I see an option in the MAAS UI to change the source under Images tab where it can be set to maas.io or custom url but is that the source for ephemeral Images only or it can also be a source for custom images?

thanks,
Jewsco