Source: https://github.com/kraxel/s2i-kerneldoc
Image: kraxel/s2i-kerneldoc @ docker.io registry
oc new-app kraxel/s2i-kerneldoc~git://some.host/path/to/linux/kernel/source/repo.git
Meanwhile simply uses the image registry.gitlab.com/kraxel/s2i-sphinx without anything added, so you can that instead.
Not working right now because latest upstream linux kernel docs don't build with latest sphinx (kernel 5.8-rc5 & sphinx 3.1).