I haven't tried to run desktop applications from Libertine, so have no experience here. For command line apps libertine-container-manager exec and libertine-launch commands works for me. Have you tried running ubuntu-app-launch <CONTAINER_ID>_<desktop_file_name>_0.0 command (from the docs)?

@pepprim Glad it helped. Now onto the next stage UBports Ubuntu Touch, libertine containers, X apps have fun and enjoy your M10.