ArchiveTeam delegates tasks to volunteers and themselves running the Archive Warrior VM, which does the actual archiving. The resultant archives are then centralized by ArchiveTeam and uploaded to the Internet Archive.
Sidenote, but you can also run a Warrior in Docker, which is sometimes easier to set up (e.g. if you already have a server with other apps in containers).
Yep, I have my archiveteam warrior running in the built-in Docker GUI on my Synology NAS. Just a few clicks to set up and it just runs there silently in the background, helping out with whatever tasks it needs to.
Ran archive warrior a while back but hadde to shut it down AS i sterted seeing the VM was compromised trying to spam ssh and other login attemps in my local network.
It should have been properly setup, but it was a couple years ago and I migth have left to much open. (it was on a VM behind a consumer nat, firewall router solution )
(Source: ran a Warrior)