start.sh runs with `set -euo pipefail`, but three call sites added in
070ab2650 (refac: reorganize scripts and ci workflows) reference
optional env vars via bash's `,,` lowercase expansion without any
default. Containers that don't set these vars — the default for every
deployment that isn't explicitly opting into Playwright / bundled
Ollama / CUDA — crash on startup with:
start.sh: line 15: WEB_LOADER_ENGINE: unbound variable
(and the same for USE_OLLAMA_DOCKER, USE_CUDA_DOCKER once the first
were set in turn.) Reported in open-webui#24560 by urbenlegend.
The same refactor correctly defaulted every other optional env var
with `${VAR:-…}`. The three `,,` references slipped through because
bash can't combine `:-default` with `,,` in a single substitution —
`${VAR:-default,,}` makes the default literal `,,`, not what's wanted.
Fix: normalise the three vars in a one-line preamble with `${VAR:=}`,
which assigns an empty default if unset. The downstream `${VAR,,}`
expressions stay exactly as Tim wrote them, preserving the file's
visual style and matching the existing `${VAR:-…}` idiom for "this
variable is optional".
Updated the uvicorn startup command to dynamically detect and use either 'python3' or 'python',
ensuring compatibility across different environments and pyenv setups.
This avoids issues where only one of the commands is available.
This way the random secret is created on first run instead of docker build. We don't really want all standard imaages to share a password anymore than we want a static password.
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Timothy Jaeryang Baek
Hadad
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Timothy J. Baek
Jan-Timo Hesse
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Jun Siang Cheah
Jun Siang Cheah
Self Denial
Jannik Streidl
Jannik SandGitHub
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Tim Farrell
Giulio De PasqualeandGitHub
Mike Slinn
Anuraag Jain
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