Truman continues to steer his wrecked sailboat towards the infinitely receding horizon. All is calm until we see the bow of the boat suddenly strike a huge, blue wall, knocking Truman off his feet.
Laravel Sail introduces the notion of a bespoke development environment for the application, which, in my opinion, is the technology's real kicker.
As mentioned already, Laravel Sail is based on Docker, which is a technology leveraging containers.
Think about it: the docker-compose.yml file is not specific to Laravel Sail, that's just how Docker Compose works.