From the Portainer website:
Portainer is a Universal Container Management System for Kubernetes, Docker/Swarm, and Nomad that simplifies container operations so you can deliver software to more places, faster
By default, the entire software stack is deployed as a single container. This provides an easy way to get started and will be sufficient for several thousand documents.
Portainer installations are not officially supported and are meant for small/personal/demo installations. This might change as the body of knowledge regarding the Portainer system increases.
Installation: Portainer installation