fix: bug in get_available_cores within container

[oOraph]

fixes #544

[HuggingFaceDocBuilderDev]

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[oOraph]

@dacorvo, @JingyaHuang some tests fail but it does not look like it's related to any change made in this pr: it looks like some missing token or auth issue (at least for both tests "Optimum Neuron - Common tests on Trainium" and "Optimum neuron / Test INF1 inference / Run INF1")

can you confirm ?

[dacorvo]

@dacorvo, @JingyaHuang some tests fail but it does not look like it's related to any change made in this pr: it looks like some missing token or auth issue (at least for both tests "Optimum Neuron - Common tests on Trainium" and "Optimum neuron / Test INF1 inference / Run INF1")

can you confirm ?

Yes, builds from forks cannot use the CI token, leading to unauthorized access errors.

[dacorvo]

LGTM, thanks !