Traefik reverse proxy in Docker swarm

I have setup a couple of VMs and clustered them together as docker swarm. I have launched odoo app but I can't access it on the internet, I need someone with knowledge of traefik to help me route the ingress traffic properly. You have to show what you did so that I can do that if the need arise. I also have a gui setup the manages all the dockers and the swarm using portainer.