During releasing v0.5.0 of first-draft, I found a bug and a improvement to a recent feature that I wanted to fix before I released.

Like a good developer, I opened two separate issues, one for the bug and one for the improvement, and created a branch and merge request for them.

I quickly completed both, pushed them to gitlab and waited for the CI to complete. They both passed, but when I tested the bugfix, it still wasn't fixed, even though it was working on my dev machine.

Recollecting something similar had happened before, I manully reran the build, which fixed the issue.

I knew something was wrong with my cache settings in the CI config. I did a quick search and found Cache vs Artifacts on the Gitlab documentation.

The issue was the cache I had set up was being shared across all pipelines, so when two were running at the same time there was a race condition between the client being built (and stored and cached in the /dist folder) and the docker container being built (using the cached folder).

As the docs say, caches are shared between pipelines, artifacts are not.

So after removing the cache and extending the artifact on the build job, all worked correctly.