Strictly from a container perspective, wouldn’t this workflow create more overhead? For example, an incus cluster for me it would be Debian hosts (layer 1), incus (layer 2), lxd container (layer 3), docker (layer 4), app/service (layer 5). A Docker Swarm cluster (for me) would be Debian hosts (layer 1), docker (layer 2), app/service (layer 3).
Granted a docker swarm cluster would negate the possibility of VMs without having to install something else on the hosts but asking since I’m trying to keep my services in containers.