Yes SDK is Linux and using docker to build, so I did not install virtualbox. Device is Jolla C, the first C not C2.
spec file is almost same.
%files
%defattr(-,root,root,-)
%{_bindir}/%{name}
%{_datadir}/%{name}
%{_datadir}/applications/%{name}.desktop
%{_datadir}/icons/hicolor/*/apps/%{name}.png