Portainer is a web dashboard for the Docker engine already running on your VPS. Its documentation describes the goal as hiding the complexity of managing containers behind an easy-to-use UI, so everyday container work doesn't depend on remembering CLI flags. That is a real convenience once a server runs more than a …

A stock Ubuntu install ships an ancient Docker package under a different name entirely — docker.io — if it ships one at all, and that package trails months or years behind what Docker actually maintains. The reliable path on a VPS is Docker's own apt repository, which tracks Docker Engine releases directly and gets you …