Commit 4dc77e79b8 for bind

commit 4dc77e79b8789b4563bf70f2019b15f0ed6e8cd2
Merge: 2534fd5371 093ac0752c
Author: Michal Nowak <mnowak@isc.org>
Date:   Wed Sep 30 15:59:28 2026 +0200

    new: ci: Build the BIND 9 container image in CI

    The official container images are built from the bind9-docker repository
    only after a release is tagged, so a change that breaks the image build
    is found out too late.  Add a "docker-image" job building the image from
    the bind9-docker branch matching this source tree, fed with the tarball
    from "tarball-create" instead of a released one, and run "named -V" in
    the resulting image as a smoke test.

    Assisted-by: Claude:claude-opus-5

    Merge branch 'mnowak/ci-build-container-image' into 'main'

    See merge request isc-projects/bind9!12685