Howto: making arbitrary "Legacy" applications available from the application menu.
Just to document some findings, in case somebody is looking for the same answer: This is how I am using and "integrating" normal Ubuntu and other 3rd-party applications into the launcher:
Creating a libertine image, as documented here.
libertine-container-manager create -i legacy -n "Legacy" libertine-container-manager install-package -i legacy -p gnome-terminal libertine-container-manager install-package -i legacy -p openjdk-8-jre
Now from the OpenStore install package "Desktop Apps". Enable the "Desktop Apps" scope in the launcher. Now swiping left on the Launcher should bring up the "Desktop Apps" scope. After running the commands above it lists just two items: "OpenJDK Java 8 Policy Tool" and "Terminal" . To add other custom launchers (for example to launch some manually installed Java GUI application), you can add more items to the Desktop Apps by creating files inside the libertine container at
libertine-container-manager install-package -i legacy -p joe libertine-container-manager install-package -i legacy -p vim libertine-launch -i legacy /bin/bash cp /usr/share/applictions/terminal.desktop /usr/share/applictions/myapp.desktop joe /usr/share/applications/myapp.desktop
For example to launch a java application installed in
myapp.desktopand change the line
Exec=/usr/bin/java -jar /home/phablet/myapp.jar
(Note how the container's directory
/home/phabletcorresponds to the absolute path
/home/phablet/.local/share/libertine-container/user-data/legacy/myapp.jarwhen accessed outside the container)