Installation of cloudron onto ubuntu 16.04 removed pre-installed MariaDB server

Hello. I just installed cloudron on my Ubuntu 16.04. Installation failed. Before cloudron I had running MariaDB server.
After failed installation of cloudron I read the logs, and saw that it removed my MariaDB server. Why?

nebulon

Cloudron will "take over" the server and also manages the packages and services, which are installed. Generally it is not supported to install anything on the side. In this case Cloudron depends on mysql-server-5.7 which will probably uninstall mariadb through apt.