There are rumors that official images will migrate to Alpine linux, for example docker-gets-minimalist-with-plan-to-migrate-images-to-alpine-linux.
All these rumors come from a hacker news thread (https://news.ycombinator.com/item?id=10998667), from shykes’s comment
Incidentay, we have hired Natanael Copa, the awesome creator of Alpine Linux and are in the process of switching the Docker official image library from ubuntu to Alpine. You can help us with pull requests to https://github.com/docker-library if you want
Is there an official response for my question? Will or will not? Or in discussion?