Newer gunicorn (post-23.0.0) added _get_control_socket_path() which calls os.path.isabs() on the value — crashing when it is None. Point the socket to /dev/shm (already used for worker_tmp_dir) so it is writable inside the container and satisfies the new gunicorn code. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>