如已安装先卸载旧版本
Ubuntu
查看已安装 dpkg -l | grep docker：
walker@LAPTOP-IHP7E9GG:~$ dpkg -l | grep docker
ii docker-ce 5:20.10.2~3-0~ubuntu-focal amd64 Docker: the open-source application container engine
ii docker-ce-cli 5:20.10.2~3-0~ubuntu-focal amd64 Docker CLI: the open-source application container engine
根据以上内容卸载 sudo apt-get autoremove
sudo apt-get autoremove docker-ce docker-ce-cli
如果需要安装全新的docker, 需要删除缓存镜像, 网络,存储卷等文件
sudo rm -fr /var/lib/docker/
使用国内 daocloud 一键安装命令
daocloud 一键安装
curl -sSL https://get.daocloud.io/docker | sh
配置非 root 用户
根据提示使用
dockerd-rootless-setuptool.sh install
启动 Docker
sudo service docker start
Hello world docker run hello-world
walker@LAPTOP-IHP7E9GG:~$ docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
0e03bdcc26d7: Pull complete
Digest: sha256:31b9c7d48790f0d8c50ab433d9c3b7e17666d6993084c002c2ff1ca09b96391d
Status: Downloaded newer image for hello-world:latest
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.
配置国内docker镜像文件源
编辑添加 vim /etc/docker/daemon.json
{
"registry-mirrors": ["https://y0qd3iq.mirror.aliyuncs.com"]
}
重启docker服务 sudo service docker restart
walker@LAPTOP-IHP7E9GG:~$ sudo service docker restart
* Stopping Docker: docker [ OK ]
* Starting Docker: docker
下载并启动 Ubuntu 镜像
启动ubuntu, 若未安装，则会自动拉取最新 ubuntu 镜像文件 docker run -it ubuntu bash
walker@LAPTOP-IHP7E9GG:~$ docker run -it ubuntu bash
Unable to find image 'ubuntu:latest' locally
latest: Pulling from library/ubuntu
da7391352a9b: Pull complete
14428a6d4bcd: Pull complete
2c2d948710f2: Pull complete
Digest: sha256:c95a8e48bf88e9849f3e0f723d9f49fa12c5a00cfc6e60d2bc99d87555295e4c
Status: Downloaded newer image for ubuntu:latest
root@88cb6518a6c8:/# ls
bin boot dev etc home lib lib32 lib64 libx32 media mnt opt proc root run sbin srv sys tmp usr var
参考资料: