1. 更新软件包并安装依赖

sudo apt update
sudo apt install apt-transport-https ca-certificates curl software-properties-common

2. 添加 Docker 官方 G1PG 密钥

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

3. 添加 Docker 软件源

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

4. 安装 Docker Engine

sudo apt update
sudo apt install docker-ce docker-ce-cli containerd.io

5. 启动并设置开机自启

sudo systemctl start docker
sudo systemctl enable docker

6. 检查 Docker 版本

docker --version

7. 运行测试容器

sudo docker run hello-world

如果看到欢迎信息说明安装成功。