1 # ​Ubuntu 系统 Docker CE 安装

2 卸载旧版本（如有）

在安装新版本前，建议清理旧版 Docker 及相关组件：

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sudo apt-get remove docker docker-engine docker.io containerd runc

3 ​更新系统并安装依赖

确保系统软件包最新，并安装必要的工具：

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sudo apt-get update
sudo apt-get install -y \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg \
    lsb-release

4 添加 Docker 官方 GPG 密钥

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

5 ** 配置 Docker APT 源**

5.1 x86_64 / amd64

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$  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

5.2 ​​armhf（树莓派 3）​

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$  echo \
"deb [arch=armhf 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

5.3 ​​arm64（树莓派 4）​

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echo \
"deb [arch=arm64 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

​📌 架构说明

  • ​armhf：32 位 ARM（如 armv7）
  • ​arm64：64 位 ARM（如 armv8 及以上）
  • ​x86_64 / amd64：标准 PC 架构

5.4 ​安装 Docker CE

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

5.5 ​启动 Docker 服务

安装完成后，启动 Docker 并设为开机自启：

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sudo systemctl start docker
sudo systemctl enable docker

5.6 ​验证安装

运行测试容器，检查 Docker 是否正常工作：

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sudo docker run hello-world

6 卸载：

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$ sudo apt-get purge docker-ce docker-ce-cli containerd.io
$ sudo rm -rf /var/lib/docker
$ sudo rm -rf /var/lib/containerd

7 快速安装

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sudo apt-get remove docker docker-engine docker.io containerd runc
sudo apt-get update

$ sudo apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg \
    lsb-release


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


# x86_64 / amd64
         $  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



# armhf
        $  echo \
 "deb [arch=armhf 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

# arm64
            echo \
            "deb [arch=arm64 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




        armhf 代表的是 32 位，arm64 才是代表 64 位。
        armv7 代表架构还是 32-bit.
        armv8 是第一个 arm64 的架构




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