1.获取root权限
sudo -i

2.更新软件园列表
sudo apt update

3.安装相关依赖
apt-get install ca-certificates curl gnupg -y

4.添加 Docker 的 GPG 密钥(阿里云镜像)
install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
chmod a+r /etc/apt/keyrings/docker.asc

5.将 Docker 软件源添加到 APT 列表中(阿里云镜像)
echo \
"deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://mirrors.aliyun.com/docker-ce/linux/ubuntu \
$(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
tee /etc/apt/sources.list.d/docker.list > /dev/null

6.再次更新软件源列表
sudo apt update

7.安装 Docker 引擎
apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin -y

8.启动 Docker
systemctl start docker

9.设置开机自启动
systemctl enable docker

10.验证安装是否成功
docker version
