#837 Simplify Dockerfile template virtualenv and UV_PYTHON configuration Pull request opened by pingsutw Summary • Replace

${VIRTUALENV:-/opt/venv}

and

${UV_PYTHON:-/opt/venv/bin/python}

ENV fallbacks with explicit

ARG

declarations, fixing BuildKit warnings about undefined variables • Keep conditional virtualenv creation: only create a venv when the base image doesn't already provide

UV_PYTHON

• Simplify the

PATH

update to always prepend

$VIRTUALENV/bin

(harmless no-op if base image provides its own) Test plan • Build a Docker image with default base and verify virtualenv is created at

/opt/venv

• Build with a base image that sets

ENV UV_PYTHON=...

and verify venv creation is skipped • Verify no BuildKit warnings about undefined variables during build flyteorg/flyte-sdk