Advantage of using `/app/.venv/bin/fastapi` instead of `uv run fastapi` in `Dockerfile`?

[galah92]

Looking at

uv-fastapi-example/Dockerfile

Lines 13 to 14 in a488d3c

	# Run the application.
	CMD ["/app/.venv/bin/fastapi", "run", "app/main.py", "--port", "80"]

Isn't it preferable to use CMD ["uv", "run", "fastapi", "run", "app/main.py", "--port", "80"] instead?

[zanieb]

It avoids checking if the environment is up-to-date before running which provides a marginal speed increase. I'm considering changing this though.

[edmorley]

Or alternatively, adding an ENV PATH="/app/.venv/bin/:$PATH" entry to the Dockerfile, and changing the CMD to ["fastapi", "run", "app/main.py", "--port", "80"].