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Portable docker daemon for deterministic CI builds

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(Alon Bar Lev) #1

We are looking to make use of Docker to run integration tests within CI builds (with Bazel).
We need to support Debian as well as MacOS.

In order to guarantee build correctness, and ensure determinism and portability, we cannot rely on the host having a running docker daemon. The build needs to come with its own docker daemon.
What is the best way to achieve this? Is there a standard “portable” docker binary?
If not, what do you think would be the right approach to implement this?
In linux systems, I imagine this would be relatively simple, as we would just need to download the binaries and run.
In MacOS, I guess we would need to bundle it with hyperkit.

Would love to hear your thoughts on this.