More detailed description on image version?

[zzj0402]

What's the base image system?
What is the rootless container?
Explain?

[wglambert]

The variants are Alpine and windowsservercore-1809
https://github.com/docker-library/docs/tree/master/docker#simple-tags

The rootless variant runs as a non-root user
https://github.com/docker-library/docs/tree/master/docker#rootless
For more information on it see the linked thread #174

In the future questions like these are better asked over at the Docker Community Forums, Docker Community Slack, or Stack Overflow. Since these repos aren't really a user-help forum

[zzj0402]

Thanks for the explanation but I think it's better to put in the repo markdown. This is more related to what things are than “user-help”.