Dokku

Dokku is a platform as a service that its operator installs on one Linux server. Apps are deployed by pushing their code to the server with git. Dokku builds each app from a Dockerfile, or detects the language and builds it with buildpacks, then starts containers from the resulting image. The installation guide describes the requirements and the bootstrap script that installs it.

The project’s homepage describes Dokku as an open source alternative to Heroku.

Worth knowing

The open source edition runs on a single server. The project sells a separate add-on, Dokku Pro, for the same installation, and its page states that it is not a hosted service.