Summary

Docker provides a virtualization platform which uses container infrastructure, lighter than hypervisor one.
Docker runs on not only Linux but also Windows and macOS today.

To install Docker on Arch Linux, all you have to do is:

$ sudo pacman -Sy docker

A very simple way :)

Of course, it's just the same with Manajro or Artix Linux. Some GUI package managers would be also available, alternatively.

Reference

• The official documentation by Arch Linux