Add support for docker-compose

[Tanmai Gopal]

Can we add support for docker-compose via docker stack?
That way we would have:

1. Kubernetes manifests
2. Helm
3. Docker-compose

1, 3 are ideal for developers.

docker stack deploy is pretty much exactly like helm install. Uses a compose.yaml instead of Helm charts.
https://docs.docker.com/engine/reference/commandline/stack_deploy/#description