Recently, an update has made it possible for the Docker CLI to support Docker Compose.
cf. docs.docker.com - Compose CLI Tech Preview
Since it's a Tech Preview, it's not yet recommended for production use.
For compatibility details, see here.
docs.docker.com - Compose command compatibility with docker-compose
Docker Compose is implemented in Python, but the supported Docker Compose this time is apparently made with Golang.
cf. https://github.com/docker/compose cf. https://github.com/docker/compose-cli
