3e39d7234c
### What this PR does / why we need it?
This PR introduce the infra cache server to speed up apt/pip package
installation
### Does this PR introduce _any_ user-facing change?
None
### How was this patch tested?
Tested locally, with this config, the network bandwith reduce from 100%
to 5% usage when a new PR was submitted.
<img width="807" height="334" alt="image"
src="https://github.com/user-attachments/assets/16f03bce-4531-4c71-ab6e-8308dc2c022c"
/>
- vLLM version: v0.9.2
- vLLM main:
8dfb45ca33
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Signed-off-by: mywaaagh_admin <pkwarcraft@gmail.com>