add helper_image option to docker executor config

Vitaliy Zakharovrequested to merge
zakharov1/gitlab-runner:docker-helper-image-config into master

What does this MR do?

Add helper_image config option to docker executor

Why was this MR needed?

We actively use git-lfs in our projects. Currently git-lfs version change impossible without upgrade of gitlab-runner. But we need to regulary upgrade git and git-lfs for performance improvements and bug fixes. This MR allows us to have internal docker image based on gitlab/gitlab-runner-helper with latest versions for git and git-lfs.

Are there points in the code the reviewer needs to double check?

Does this MR meet the acceptance criteria?

  • Documentation created/updated
  • Tests
    • Added for this feature/bug
    • All builds are passing
  • Branch has no merge conflicts with master (if you do - rebase it please)

What are the relevant issue numbers?

Edited by Vitaliy Zakharov

Merge request reports