[bvolpato]

The inference benchmark workflow submits with Python 3.11, but its vLLM image still installs Python 3.10 and copies that version's SDK harness. The SDK rejects the mismatch, so later benchmarks are skipped (failure).

Use Python 3.11 and its matching Beam harness throughout the image, following the existing deadsnakes installation recipe for the Ubuntu base.

Validated a full image build from a fresh SDK source distribution, the SDK compatibility check, and the worker launcher. The compatibility check accepts a Python 3.11 descriptor and rejects a Python 3.10 control. pip check reports the same existing PyGObject/pycairo dependency issue on the original Python 3.10 Dockerfile prefix and the updated image. GPU inference and Dataflow were not run.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.90%. Comparing base (2213e54) to head (5ed919d).
⚠️ Report is 30 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #40838       +/-   ##
===========================================
+ Coverage        0   79.90%   +79.90%     
===========================================
  Files           0      493      +493     
  Lines           0    83479    +83479     
===========================================
+ Hits            0    66703    +66703     
- Misses          0    16776    +16776     

Flag	Coverage Δ
python	79.90% <ø> (?)

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