... to avoid redirects on the client side and to make repo migration better visible. Also amend 'Status' and 'Contributing' in Readme.md. bluesky added, albeit mastodon seems more interactive. Clarify twitter account is not in use anymore.
to use an up to date Alpine version
.. to at least be on par with 3.0
... to improve/mitigate performance problems, see #2299. (musl libc vs. glibc)
... using alpine 3.16
