Install Supervisor with `sudo apt-get install supervisor`. Ensure it's started with `sudo service supervisor restart`.
In `/etc/supervisord/conf.d/` create a `.conf` file. In this example, `laravel_queue.conf` (contents below). Give it execute permissions: `chmod +x laravel_queue.conf`.
This file points at `/usr/local/bin/run_queue.sh`, so create that file there. Give this execute permissions, too: `chmod +x run_queue.sh`.
Now update Supervisor with: `sudo supervisorctl reread`. And start using those changes with: `sudo supervisorctl update`.