Found by running the container on Docker Desktop. Disable gunicorn's control socket (the home directory is read-only) and ignore __pycache__ and .pyc at any depth so host bytecode with the Windows source path stays out of the image. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Sk72AxLwQnYttF6VFSxQLt