[PATCH v3] ci: add Fedora 35 container in GHA

[Aaron Conole]

David Marchand <david.marchand at redhat.com> writes:

> Build DPDK with Fedora 35 containers.
>
> GHA container support does not allow caching images and docker hub
> seems to limit image pulls.
> On the other hand, the Fedora project hub does not seem to limit them,
> so prefer this hub.
> Nevertheless, let's try to be good citizens and cache (once a day) a
> prepared image for subsequent builds.
> This preparation is done in a first prepare-container-images job.
> The rpm-container-builds job then depends on it with a 'needs:' tag.
>
> Differences with builds in Ubuntu GHA vm images:
> - tasks are run as root in containers, no need for sudo,
> - compiler must be explicitly installed,
> - GHA artifacts can't contain a ':' in their name, and must be filtered,
> - environment variables are not inherited and must be passed explicitly,
>
> Signed-off-by: David Marchand <david.marchand at redhat.com>
> ---
> Changes since v2:
> - used a two stage pipeline so that container image generation
>   is done only once,
> - changed image name local:dpdk to dpdk-local (closer to conventions),
>
> Changes since v1:
> - switched to Fedora project hub,
> - cached container image,
>
> ---

This is fantastic!

Acked-by: Aaron Conole <aconole at redhat.com>