網(wǎng)上安裝docker教程很多，但是年代久遠，現(xiàn)在提供docker官方最佳、最簡安裝教程。

一、系統(tǒng)要求

以下系統(tǒng)環(huán)境被測試過

• Ubuntu Lunar 23.04
• Ubuntu Kinetic 22.10
• Ubuntu Jammy 22.04 (LTS)
• Ubuntu Focal 20.04 (LTS)

二、卸載老版本docker

一些發(fā)行版本的linux系統(tǒng)可能存在非官方發(fā)布的docker相關組件，這里把它們卸載干凈，
不然出現(xiàn)版本沖突會很麻煩。

for pkg in docker.io docker-doc docker-compose podman-docker containerd runc; do sudo apt-get remove $pkg; done

三、命令行安裝docker

3.1、設置docker軟件源

# Add Docker's official GPG key:
sudo apt-get update
sudo apt-get install ca-certificates curl gnupg
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

# Add the repository to Apt sources:
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
sudo apt-get update

3.2、安裝最新版

執(zhí)行下面明令安裝就OK

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

靜靜等他安裝玩就行。安裝過程打印信息如下：

root@DESKTOP-UDK350B:~# sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
  dbus-user-session docker-ce-rootless-extras libltdl7 libslirp0 pigz slirp4netns
Suggested packages:
  aufs-tools cgroupfs-mount | cgroup-lite
The following NEW packages will be installed:
  containerd.io dbus-user-session docker-buildx-plugin docker-ce docker-ce-cli
  docker-ce-rootless-extras docker-compose-plugin libltdl7 libslirp0 pigz slirp4netns
0 upgraded, 11 newly installed, 0 to remove and 102 not upgraded.
Need to get 114 MB of archives.
After this operation, 409 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://archive.ubuntu.com/ubuntu jammy/universe amd64 pigz amd64 2.6-1 [63.6 kB]    
Get:2 https://download.docker.com/linux/ubuntu jammy/stable amd64 containerd.io amd64 1.6.24-1 [28.6 MB]
Get:3 https://download.docker.com/linux/ubuntu jammy/stable amd64 docker-buildx-plugin amd64 0.11.2-1~ubuntu.22.04~jammy [28.2 MB]
Get:4 https://download.docker.com/linux/ubuntu jammy/stable amd64 docker-ce-cli amd64 5:24.0.7-1~ubuntu.22.04~jammy [13.3 MB]                                                                 
Ign:1 http://archive.ubuntu.com/ubuntu jammy/universe amd64 pigz amd64 2.6-1                                                                                                                  
Get:5 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 dbus-user-session amd64 1.12.20-2ubuntu4.1 [9442 B]                                                                           
Get:6 http://archive.ubuntu.com/ubuntu jammy/main amd64 libltdl7 amd64 2.4.6-15build2 [39.6 kB]                                                                                               
Get:7 http://archive.ubuntu.com/ubuntu jammy/main amd64 libslirp0 amd64 4.6.1-1build1 [61.5 kB]                                                                                               
Get:8 https://download.docker.com/linux/ubuntu jammy/stable amd64 docker-ce amd64 5:24.0.7-1~ubuntu.22.04~jammy [22.6 MB]                                                                     
Get:9 http://archive.ubuntu.com/ubuntu jammy/universe amd64 slirp4netns amd64 1.0.1-2 [28.2 kB]                                                                                               
Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /lib/systemd/system/docker.service.
Created symlink /etc/systemd/system/sockets.target.wants/docker.socket → /lib/systemd/system/docker.socket.
Processing triggers for man-db (2.10.2-1) ...
Processing triggers for libc-bin (2.35-0ubuntu3.1) ...
/sbin/ldconfig.real: /usr/lib/wsl/lib/libcuda.so.1 is not a symbolic link

3.3、驗證

sudo docker run hello-world

以上命令下載測試鏡像，并生成容器。 當容器運行時，它會成功打印消息并退出，表明安裝OK，bash終端打印信息如下：

root@DESKTOP-UDK350B:~# 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/

四、參考

[0] https://docs.docker.com/engine/install/ubuntu/文章來源地址http://www.zghlxwxcb.cn/news/detail-728962.html

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