A unit test run stopped before it began: Docker Hub refused to hand out
archlinux:latest, "You have reached your unauthenticated pull rate
limit". GitHub's runners share addresses, so the limit is not ours to
stay under.
Arch publishes the same image as ghcr.io/archlinux/archlinux, which has
no such limit from a runner. The three workflow containers and the ISO
build's own container pull it from there.
Emir Beganovic
21a44ee4b4