I recently moved from a docker-compose setup with portainer as a manager to podman+quadlets+cockpit . After the initial pain of migration i'm really happy! I can also manage VMs, volumes, and check systemd logs so it's a good all-in-one solution for managing standalone servers. Also i think it uses systemd activation so it's really light on resources. For someone who dislikes the proxmox approach of custom kernel/os this is a good alternative.