multi-stage support in CI slaves

Description

I would like to get multi-stage support upstream. Our default docker
packages for centos 7.5 is 1.13. For multi-stage support we need > 1.17 or
have buildah working in mock (preferable over docker, won't happen now I
guess?).

Using this method[1] to install docker-ce I was able to get 1.18 running.

Doable?

Regards,
Roy

[1] https://docs.docker.com/install/linux/docker-ce/centos/

Assignee

infra

Reporter

Roy Golan

Blocked By

None

Priority

Medium
Configure