Draft: Set image to empty string for windows CI jobs
What does this MR do?
TBD
Why was this MR needed?
https://gitlab.com/gitlab-org/gitlab-runner/-/pipelines/644433299
What's the best way to test this MR?
What are the relevant issue numbers?
TBD
TBD
https://gitlab.com/gitlab-org/gitlab-runner/-/pipelines/644433299
TBD