Semaphore clones the repo and runs ansible-playbook from the working
directory, so ansible.cfg is loaded automatically. This is more
reliable than env vars inherited through podman exec subprocesses.
/opt/ansible-collections is bind-mounted into the container and
populated by the semaphore role's collections task.
- Move all roles from playbooks/roles/ to roles/
- Update roles_path in ansible.cfg
- Add cast user to common role
- Create standalone podman role
- Add semaphore role with Podman + Quadlet support
