You might be thinking about Magento. And that's also quite true. Originally blugento consisted only of the DesignCustomiser. An extension for Magento that makes it possible to customize the design of the website via the backend.

blugento today

In the meantime, blugento is much more than that. It is an application that specializes in running and managing shop applications a thousand times over. The DesignCustomiser allows you to reuse the same docker image. With one click you have started a new shop in the cloud. They are high-performance and scalable.

Does this mean it can only boot Magento? 

No, we can boot up any dockerized application. So any application you can imagine.