[Buildroot] [PATCH] gitlab-ci: use the Docker image from gitlab registry

[Peter Korsgaard]

>>>>> "Romain" == Romain Naour <romain.naour at gmail.com> writes:

 > From [1]:
 > "In November 2020, Docker introduced rate limits on pull requests from
 > Docker Hub [2]. If your GitLab CI/CD configuration uses an image from
 > Docker Hub, each time a job runs, it may count as a pull request."

 > Since then, some jobs in our gitlab-ci fail when this rate limits is
 > reached [3].

 > To avoid this rate limit, move our Docker image from dockerhub to the
 > registry provided by gitlab. Keeping the image from dockerhub would be
 > possible by using dependency proxy [4] but the gitlab registry is good
 > enough.

 > Tested on gitlab:
 > https://gitlab.com/kubu93/buildroot/-/jobs/1694863584

 > [1] https://docs.gitlab.com/ee/user/packages/container_registry/index.html
 > [2] https://docs.docker.com/docker-hub/download-rate-limit/
 > [3] https://gitlab.com/buildroot.org/buildroot/-/jobs/1687590417
 > [4] https://docs.gitlab.com/ee/user/packages/dependency_proxy

 > Signed-off-by: Romain Naour <romain.naour at gmail.com>
 > Cc: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>

Committed to 2021.02.x and 2021.08.x, thanks.

-- 
Bye, Peter Korsgaard