This seems to be a crazy project, to run a DOS Emulator in a Windows API in a Linux operating system like Ubuntu 20.04 LTS? It probably is, but it is the only way for the moment to try the
Ensemble on Raspberry Pi with Ethernet support
I have managed to install and run Ensemble on Raspberry Pi with Ethernet support, to connect Ensemble to internet. To do that you need a Raspberry Pi, Dosbian, Ensemble, and a working Ethernet connection, and of course a monitor, keyboard