Fix pipeline with change detection
What does this MR do?
Fix Error: Base Image 'base-10.15-10.15.img' does not exist on the system
https://gitlab.com/gitlab-org/ci-cd/shared-runners/images/macstadium/orka/-/jobs/1036742098#L62
When the pipeline detects that no change is needed to the base image, it uses the master base image instead of rebuilding it. As a result of !52 (merged) we ended up appending $MACOS_VERSION
twice to that master image name.
Why was this MR needed?
What's the best way to test this MR?
What are the relevant issue numbers?
Closes #59 (closed)