entrypoint.sh: a container started without a GPU request has no
nvidia-smi at all (the toolkit injects it), so the old check 1 reported
'CUDA runtime in this image is broken, re-pull' for the most common user
error. Fold the missing-binary case into the actionable 'No GPU visible'
message and document the CPU-only option (UNSLOTH_ALLOW_CPU=1).
run.sh / test_locally.sh: guard empty-array expansions with the
${arr[@]+...} form; bash 3.2 (macOS /bin/bash) treats "${empty[@]}"
as unbound under set -u, which broke the documented macOS CPU path.
studio_launch.sh: exclude *_TOKEN, *_API_KEY, *_PASSWORD, *_SECRET,
*_LICENSE from the env snapshot written for SSH sessions; secrets stay
in process env only, never on disk.
supervisord.conf / Dockerfile.studio: pin HOME=/root for the studio and
jupyter programs (jupyter would silently fall back to token auth if HOME
were unset), default JUPYTER_PORT and UNSLOTH_ENABLE_SSHD at the image
level so a direct supervisord invocation cannot hit a bad %(ENV_*)s
expansion, and document the root-services decision (non-root parity with
the previous production image is a tracked follow-up).
docker_confirm.ps1: mirror the bash script's GPU selector translation so
GPUS=0 / 0,1 select devices instead of silently using all GPUs.
docker-publish.yml: studio cache scope moves to mode=min; a mode=max
cache of a ~24GB image would evict everything else in the 10GB GHA
quota for no hit-rate gain.
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