[issue43725] Create a release branch ABI stability regression test

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

> the dump needs to be generated in a docker container using the same compiler version that is used in the CI

I'm not used to docker and I don't know how to get a docker similar than the one used by GitHub Action. Is there a documentation somewhere giving commands to get the docker image and how to run it?

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43725>
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