Function set_session_container_settings 

pub fn set_session_container_settings(
    session_id: &str,
    cpus: Option<&str>,
    memory: Option<&str>,
    mounts: &[AdditionalMount],
    updated_at: &str,
) -> Result<()>

Change only the per-session container provisioning inputs: the size overrides and the attached directories. Everything else the session row owns is left to its own writer.