Provide Appstream data via appstream-generator container
It'd be great if infra could host the Appstream files generated automatically via appstream-generator so users can automatically download the newest versions of the Appstream data for use in their software centre (e.g. GNOME Software). Appstream-generator will only download changed packages, so it shouldn't require much time for a run after the first run. The generated files also don't need a lot of storage <1GB. I think generating it once a day/every few days would be best, since new software won't show up in the software centre until the alpinelinux-appstream-data package is updated. Maybe the related appstream-data APKBUILD could even be automatically updated in aports.
The docker-compose file is here: https://gitlab.alpinelinux.org/Cogitri/appstream-generator-docker