Comment by stephenr

> based on Debian

Are you sure about that? Everything I can find now and from when it was first covered suggests that it's an RPM based "distro" (let's not argue about whether it's technically a distro).

The TomsHardware article you linked to in turns links to ZDNet which in turn links to an InfoWorld article (isn't modern reposted rehashed "news" slop just fucking delightful) about the "release" of CBL-Mariner notes that it was created as a replacement to the then-recently-deprecated RedHat CoreOS, and references that (at the time) MS had a deal with a company that was supporting a CoreOS fork.

Given those two factors, it isn't impossible but it seems hard to believe that they would use a Debian base but then Frankenstein RPM package manage into it.