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Re:What Exactly is Docker? by IanCal on Saturday February 01, 2020 @03:31PM (#22213042)
You might be interested in this: https://github.com/uber/makisu

I've not used it but it's on my list to try out, the explicit caching I think ties in with what you're after:

* Requires no elevated privileges or containerd/Docker daemon, making the build process portable.

* Uses a distributed layer cache to improve performance across a build cluster.

* Provides control over generated layers with a new optional keyword #!COMMIT, reducing the number of layers in images.

* Is Docker compatible. Note, the Dockerfile parser in Makisu is opinionated in some scenarios. More details can be found here.

Re:What Exactly is Docker? by IanCal on Sunday February 02, 2020 @09:45AM (#22217118)
I can't edit any more, but I'd really be interested in people's experiences with it.