Looks promising. Judging by the screenshots, this just solves what I didn't like about Dokku - the need to configure the application from the terminal, instead of a convenient web panel.
Will it be possible to use Golang? Or use the Dockerfile from the repository to build the container and run it? This way you can even compete with Portainer.
It will support other languages, not just Node.js. About Dockerfile, I do not see any problem with supporting that case as well, but not in my top priorities now. :)
Interesting, that cli focused deploy / management is what I like about dokku. It fits well with into the rails dev cycle which rarely leaves the terminal / text editor.
Will it be possible to use Golang? Or use the Dockerfile from the repository to build the container and run it? This way you can even compete with Portainer.