Yes, if you're familiar with docker compose and the compose file specification, adding docker swarm to the mix is very simple. You're basically swapping out the docker host with the swarm manager node. If you're genuinely only operating with a single host I don't think you even need swarm though, and regular compose mode is just fine.
Really? Am I the only one who uses docker swarm and puts multiple services onto a single vps as resources allow?
Anyway, I’m glad to see the free tier go away. It attracts the wrong crowd.