Reuse the templates from wayland/ci-templates:
whenever DEBIAN_TAG is changed, this will rebuild a new container.
This adds two things:
- better reliability (we do not randomly pull packages whenever the CI
runs and we can reproduce with this particular environment)
- faster builds, as we do not need to pull the universe at each run
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
[Pekka: bump DEBIAN_TAG]
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
