Docker的安装

  • 更新库

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    sudo apt apt-get update
    sudo apt-get install ca-certificates curl gnupg

  • 添加Docker GPG 官方密钥

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    sudo install -m 0755 -d /etc/apt/keyrings
    curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
    sudo chmod a+r /etc/apt/keyrings/docker.gpg

  • 设置Docker 源

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    echo \
      "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
      "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
      sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
  • 使用 sudo apt-get update更新库索引

  • 安装Docker

    • 最新版本

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

    • 特定版本

      1. 首先使用 apt-cache madison docker-ce | awk '{ print $3 }'命令查看Docker版本列表

      2. 选择特定版本并安装:

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        VERSION_STRING=5:23.0.3-1~ubuntu.20.04~focal
        sudo apt-get install docker-ce=$VERSION_STRING docker-ce-cli=$VERSION_STRING containerd.io docker-buildx-plugin docker-compose-plugin

  • 验证Docker被成功安装, 运行实例容器 sudo docker run hello-world, 可见以下输出:

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    $ sudo docker run hello-world

    Hello from Docker!
    This message shows that your installation appears to be working correctly.

    To generate this message, Docker took the following steps:
     1. The Docker client contacted the Docker daemon.
     2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
        (amd64)
     3. The Docker daemon created a new container from that image which runs the
        executable that produces the output you are currently reading.
     4. The Docker daemon streamed that output to the Docker client, which sent it
        to your terminal.

    To try something more ambitious, you can run an Ubuntu container with:
     $ docker run -it ubuntu bash

    Share images, automate workflows, and more with a free Docker ID:
     https://hub.docker.com/

    For more examples and ideas, visit:
     https://docs.docker.com/get-started/