That's a cool docker compose setup and is definitely competitive with a single node k8s deployment I run for hobby projects (k3s). The simplicity of this docker compose setup is an advantage, but it is missing some useful features compared to k8s:
- No Let's Encrypt support for Nginx using Cert Manager.
- No git ops support, the deployment shell script is manually run.
- No management ui's like Lens or k9s.
- Will not scale to multiple machines without changing the technology to k8s or Nomad.
That said, I would be happy to run their setup if I hadn't gone through the pain of learning k8s.