[Feature]: Provide pre-built CPU docker image

[fzyzcjy]

🚀 The feature, motivation and pitch

Hi thanks for the lib! Currently it seems that https://docs.vllm.ai/en/v0.6.1/getting_started/cpu-installation.html requires build the docker image by oneself, thus it would be great to have a prebuilt one (probably by CI).

Alternatives

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Additional context

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[medihack]

This should have been fixed with #4771 but unfortunately, I also don't see the CPU image on Docker Hub yet.

[github-actions]

This issue has been automatically marked as stale because it has not had any activity within 90 days. It will be automatically closed if no further activity occurs within 30 days. Leave a comment if you feel this issue should remain open. Thank you!

[bufferoverflow]

This is still not fixed with #4771 , the cpu image is not on docker hub