`lint` CI job doesn't require `image` configuration.
Local gitlab runner differs from one used for CI:
gitlab-runner#4604 (closed)
So there is no reason to have image
configuration for
lint
job. It still can be run locally with command:
gitlab-runner exec docker --docker-image registry.gitlab.com/gitlab-org/gitlab-build-images: ruby-2.6-golang-1.14-git-2.24 lint