Docker Buildx improving cache usage

So this PR will simplify immensly using buildx cache within Github Actions: allow exporting to github cache backend by tonistiigi · Pull Request #535 · docker/buildx · GitHub
Also see for more improvements Docker BuildKit: faster builds, new features, and now it’s stable

Is there any equivalente for CircleCI?
How can we levarage buildx in CircleCI in the best way possible, without using the technique of “docker pull X” to warm the local cache.

Hope for your best feedback, thanks.