A tag named inbuxa-v<version> (the tagged commit's own version from
scripts/version.mjs, '+' as '-') now builds a linux/amd64 + linux/arm64
image at <REGISTRY>/inbuxa/ihasmail-inbuxa, tagged with the version and
latest, links the package to the repository and creates the release.
The inbuxa- prefix keeps upstream ihasmail's v* tags, which this
repository carries on shared commits, from ever publishing under the
INBUXA name. The tag must name its commit's version and the commit must
be on main. No schedule yet: releases are cut by hand.