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At present

rdctl

doesn't support the scenario of launching the application remote via command line. At present, the intended purpose of rdctl is to let users start, and use the application on a machine directly or connecting to a remote machine via graphic means such as VNC, Remote Desktop connection etc.

Should I add using

rdctl

in this scenario as a feature request?

yes please

Could also consider setting

DISPLAY=:0

or whatever appropriate (assuming you have an X11 server already). (Or possibly use lima directly.)