The host's rootless Docker socket is mounted as /var/run/docker.sock
inside CI containers. Its data root is on the host filesystem (not
accessible from inside the container), so _get_docker_free_bytes
returns 0. Previously the code didn't trust this and started a local
dockerd on /dev/shm (too small). Now checks pgrep for dockerd processes
— if none found inside the container, the socket is the host's Docker
and should be trusted.
Generated with [Devin](https://devin.ai)
Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
