### What this PR does / why we need it? Revert speedup image building and CI Installation related PRs git revert8835236181git revert64fba51275git revert263c2f8e8dgit revert84b00695f8### Does this PR introduce _any_ user-facing change? ### How was this patch tested? - vLLM version: v0.16.0 - vLLM main:15d76f74e2--------- Signed-off-by: wjunLu <wjunlu217@gmail.com>