一、 下载docker

1. 更新系统包索引

sudo apt update

2. 安装必要依赖

sudo apt install -y ca-certificates curl gnupg lsb-release

3. 添加 Docker 官方 GPG 密钥

sudo mkdir -p /etc/apt/keyrings

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg

4. 添加 Docker APT 仓库

echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

5. 再次更新并安装 Docker

sudo apt update

sudo apt install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin

二、配置阿里云加速器

1. 打开阿里云

https://www.aliyun.com/

2. 搜索镜像加速工具

3. 获取加速地址

4. 创建配置目录

sudo mkdir -p /etc/docker

5. 写入你的加速器地址

sudo tee /etc/docker/daemon.json <<-'EOF'

{

  "registry-mirrors": ["https://YOUR_ID.mirror.aliyuncs.com"]

}

EOF

三、启动并验证
 

# 重载配置并启动
sudo systemctl daemon-reload
sudo systemctl enable --now docker

# 验证版本
docker --version

# 验证加速器是否生效
docker info | grep -A 1 "Registry Mirrors"