[AkihiroSuda]

> I guess rootless is some of the work that Docker (company) wanted to keep proprietary and out of this open-source project.

Rootless mode for Docker is completely FLOSS, and its main contributor (me) has even never worked for Docker (company).

https://github.com/moby/moby/blob/master/contrib/dockerd-roo...

https://github.com/rootless-containers