Self-hosted subset of

Is there way to create self-hosted subset of subset of

For example, I need only Centos and Ubuntu images and only amd64.

I know I can rsync with filter, but is there a more correct way?

In fact I need something like “copy centos and ubuntu images from, add my own images and build correct metadata for all this images”.

See the Incus 0.7 announcement, specifically the new incus-simplestreams tool, that should make things easier for you.