Ubuntu20.04美化桌面dock栏居中方式

//安装 gnome-software
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install gnome-software
//安装gnome-tweak-tool
sudo apt-get install -y gnome-tweak-tool
sudo apt-get install -y chrome-gnome-shell
 sudo apt install -y gnome-shell-extensions

sudo apt remove gnome-shell-extension-ubuntu-dock