vLLM on the pod died with 'Engine core initialization failed. See root
cause above' — and the root cause was above the six-line tail the 503
carried. Neither core has a C compiler; Triton JIT-compiles vLLM's (and
SGLang's) kernels at run time and needs one. A <profile>.apt marker
keeps runtime apt packages in the image; vllm and engines-kt get gcc.
The worker's error now surfaces the lines that name an error first.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKm7Z56iKjHgNkHc6VhWKz