Github Actions? Gitlab CI? Many of those don't do any caching because of the chance of poisoning a tag in the local registry, and don't have a good way to do caching per project.

I can imagine that this affects those sorts of operations.

Yeah, that's what I was getting at - in CI I can see it, but in local dev it would seem surprising to need more than the free-with-authentication quota.

That said, if your CI needs more, it's probably time to invest in a paid account if you can, and certainly if you're commercial.

You can use the GitLab Dependency Proxy for caching images from DockerHub, it's pretty straightforward to pull cached images:

https://docs.gitlab.com/ee/user/packages/dependency_proxy/

Using `docker-machine` You can use an environment variable to pull from a local docker mirror from new bare VMs.

`export ENGINE_REGISTRY_MIRROR=https://mirror.mysite.com`