Install cairo-dock-plug-ins by entering the following commands in the terminal:
sudo apt update sudo apt install cairo-dock-plug-ins
Description:
Cairo-dock - All plug-ins
A collection of official plug-ins and applets for cairo-dock. . This is a metapackage depending on all available cairo-dock plug-ins to make installation easier.
Homepage: http://www.glx-dock.org/
Version: 3.4.1-2build1
Section: universe/graphics