Reproducable docker images

I wonder if there's anyone working on reproducable alpine docker images?

Currently the builds are based on the latest alpine linux repository which naturally change from time to time. So basically currently a docker image could not be reproduced after an update in that repository.

Since I did not found an equivalent to https://snapshot.debian.org which should be necessary to provide reproducable images I created a bash script to sync alpine linux repository: https://github.com/asbachb/alpine-package-sync