Sorry I've been quite sick (to the point of barely having energy to look at the computer). I'm back on my feet now though :)
Sangy/Santiago was so nice to speak with the docker guys. They said they would approve our docker image and we could move it to the other official images. But for this we need to do some changes on our docker repository on github. (As long I understood sangy correct it would be just some new branches).
Can you actually give more details how it's going to look like?
The official images projects info is on  and  if you want to read more in-depth/updated information. I'll summarize here though:
1) A TU/Arch Linux "affiliate" submits a PR to the official images repository, which basically contains the following: 1. A tag name/image name 2. A sha256/ref of a commit/tag containig the image's information on *another* repository (in this case, our official dockerr image repo) 3. Image building instructions. 2) In parallel, we put this information on our repository. At least, a rootfs and a Dockerfile (as otherdistros do). 3) once the PR is updated, it will fetch our rootfs and Dockerfile (and other relevant info), build the docker image, and perform some quality checks on it. 4) The image is published as an "official image" on the dockerhub.
The benefits from this is that industry/paranoid users often don't trust non-official images to build upon. Also, if I recall correctly, official images are periodically scanned for vulnerabilities, and (IIRC) signed with the docker-controlled signing keys, so they can be used with docker content trust.
I think it'd be not too difficult to schedule script the rootfs build process in the same way we do with boxes right now, publish these as tags and then update the official dockerfile repositories.
Sorry for the delay.