2020
Tiropadang - install and configure Plank Dock (xubuntu 20.04) of 20:12
    https://www.youtube.com/watch?v=Zwr51xzOJYc
2017
ArchLabs : 127 how to autostart plank, change settings and set or get more themes
    https://www.youtube.com/watch?v=iipiQOy9zww