Docker/oci and thus gitlab-runner, default to a root
user inside the namespace, even if its an unprivileged
one.
This can cause issues and let permission bugs sneak in,
as we are functionally root when running the build.
Switch the build jobs to run with our new "containeruser"
so we avoid much of it.
Our user is still in the wheel/sudo group but that's fine
as long we don't elevate the privileges unintentionally.
Noticeably for the time being, we will need to chown the
CI_PROJECT_DIR checkout as the gitlab runner might try
to reuse pre-existing and cached volumes of the project
checkout.
Additionally we need to change the ccache path, so we
will avoid the existing cache owned by "root".
Close https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/2433
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8763>
We install the rust toolchain, but then we have to manually
source it in CI since the headless containers skip over
the shell profiles that rustup typically uses.
Ideally we'd set these as variables in the main image, but
we don't have access to the buildah instance used in
ci-templates/cbuild.
However adding them to the toolbox image is good enough to
have the toolbox setup work ootb even if it doesn't call the
ci/scripts/source_image_env.sh script like the gitlab-ci jobs
will do.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7816>
* Move the exported PATH variables into a script so
we can source it in all the wrapper scripts.
* Add a guard to only copy over the cache when the
SUBPROJECTS_CACHE_DIR variable is set, which only
happens on CI by default
* Make it possible to run the scripts with default
values for some of the variables, like WERROR and MESON_ARGS.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7591>
The gstreamer-rs repos use debian based images already,
which we can later base on this one. Additionally it's
good to have another distro target so we avoid weird
fedoraisms when possible.
It will also be simpler to keep it up to date, as we
don't need to run the test suite against this build as
well.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6656>
