ubuntu下docker的安装

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本文档详述了在 Ubuntu 18.04 系统上安装 Docker CE 的过程，包括更新系统、添加 Docker 仓库、安装 Docker 以及验证安装是否成功。通过运行 'hello-world' 镜像来检查 Docker 是否正常工作。

可以在官网根据文档进行安装，我这里展示我的安装过程

环境 Ubuntu 18.04.5 LTS

步骤：

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

#我的机器架构是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

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

sudo docker run hello-world

如果没报错并出现下图代码，则安装成功，如果报错可以尝试重启，一些设置需要重启后才能配置完成

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/