chore: improve --port help text (#1346)

# What does this PR do?
[Provide a short summary of what this PR does and why. Link to relevant
issues if applicable.]

It would be better to tell user env var usage in help text.
```
before:
$ llama stack run --help
  --port PORT           Port to run the server on. Defaults to 8321

after
$ llama stack run --help
  --port PORT           Port to run the server on. It can also be passed via the env var LLAMA_STACK_PORT. Defaults to 8321
```

[//]: # (If resolving an issue, uncomment and update the line below)
[//]: # (Closes #[issue-number])

## Test Plan
[Describe the tests you ran to verify your changes with result
summaries. *Provide clear instructions so the plan can be easily
re-executed.*]

[//]: # (## Documentation)

Signed-off-by: reidliu <reid201711@gmail.com>
Co-authored-by: reidliu <reid201711@gmail.com>
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Reid 2025-03-04 08:49:03 +08:00 committed by GitHub
parent 0a76ece249
commit 5c9d12a206
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2 changed files with 2 additions and 2 deletions

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@ -37,7 +37,7 @@ class StackRun(Subcommand):
self.parser.add_argument(
"--port",
type=int,
help="Port to run the server on. Defaults to 8321",
help="Port to run the server on. It can also be passed via the env var LLAMA_STACK_PORT. Defaults to 8321",
default=int(os.getenv("LLAMA_STACK_PORT", 8321)),
)
self.parser.add_argument(