I have a kubernetes cluster inside of Proxmox vm's, generally I write a deployment, commit it to a git repo and then use argocd to deploy it in the cluster.

This is not something I would advise to anyone but the clinically insane, but for me there is a certain zen in having everything in git like that. It's for me the only way I can manage the 60ish applications I run without it having a permanent spot in my brain.