K3s is easy to deploy. It has a great installer, and it's fully compatible with the entire Kubernetes ecosystem of tooling.

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Atomic Spin

A step-by-step guide to deploying a Dockerized web app on a single Linux server using K3s (lightweight Kubernetes), Helm, Zot (private OCI registry), and CloudNativePG. The guide walks through installing a single-node K3s cluster, setting up a private container registry with Zot, deploying a managed PostgreSQL instance via the CloudNativePG operator, and packaging the app as a Helm chart with automatic database wiring. The full stack runs on 2–4GB RAM and provides a scalable, standards-based alternative to ad-hoc deployment methods like Docker Compose or systemd services.

K3s: A Better Way to Deploy a Docker App to a Linux Server