Rootless docker installation and configuration

Is your feature request related to a problem? Please describe.

Global docker environment is required for the laboratory. Normal dicker installation will cause some problem because all user that want to use docker must be belong with docker group and it's insecure. So we should install docker with "rootless" mode.

https://docs.docker.com/engine/security/rootless/

Describe the solution you'd like

Install docker and configure rootless mode.

Describe alternatives you've considered

It's may have no problem with normal mode. Main problems are following.

All users can access the other's containers.
All users can access to all files on host machine with root privilege.

Additional context

Currently, we add all users want to access docker to docker group.

ushmz / gesso

Rootless docker installation and configuration #2