[orf]

We do, but docker caching is not terribly easy to implement in a project with lots of concurrent builds. At least not for me.

We build images based on their commit hash, caching off the last commit hash. That works but has issues with merges and the first commit to a branch.

We also do it based on the branch name, but Docker has issues around specifying multiple cache from arguments in the CLI. That causes unnecessary invalidations on branches.

That all leads to more rebuilds than I would like.