要在Ubuntu上安裝和部署Docker，可以按照以下步驟進行操作：
sudo apt update
sudo apt upgrade
sudo apt install apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
echo "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt update
sudo apt install docker-ce docker-ce-cli containerd.io
sudo systemctl start docker
sudo docker run hello-world
如果您看到一條消息說明Docker已成功安裝，則安裝成功。
這樣，您就已經在Ubuntu上成功安裝和部署了Docker。
