docs(config): clarify DOCLING_SERVE_URL default is compose-only (#134)
The default value 'http://docling-serve:5001' only resolves inside
the docker-compose dev stack (where 'docling-serve' is the service
name). An operator deploying anywhere else — Kubernetes, ECS without
the bundled compose file, a single VM, anything — sees the default,
nothing complains at startup, and every document submission silently
fails when the api can't connect.
Expand the Field description to say so plainly: it's required, there
is no in-process fallback, and these are the two address shapes
operators actually use:
http://localhost:5001 — sidecar in the same task / pod
http://<dns-or-host>:5001 — separate docling-serve service
No behaviour change. Docstring-only.
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>