To install Cairo dock on Ubuntu, open “Accessories->Terminal” and enter:
sudo add-apt-repository ppa:cairo-dock-team/ppa
sudo apt-get update
sudo apt-get install cairo-dock
To auto-start Cairo dock after the system start:
1. Open “Cairo dock” from “System -> Preferences -> Startup Applications”.
2. Click on “Add”
Add name: Cairo dock
Command: cairo-dock -o
-o for graphics drivers that support OpenGL.
-c for other graphics cards.
(if Cairo doesnt open properly after startup, change the command as: cairo-dock -c)