ubuntu 20 apt安装Docker

1、先卸载旧版，如果没有的话，就不用执行了，跳过往下看，直接第二步

root@vultr:/# apt-get remove docker docker-engine docker.io containerd runc

2、在终端输入

root@vultr:/# apt update Hit:1 http://archive.ubuntu.com/ubuntu focal InRelease Get:2 http://archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB] ...... ...... root@vultr:/# apt-get install ca-certificates curl gnupg lsb-release Reading package lists... Done Building dependency tree Reading state information... Done ...... ......

3、安装证书

root@vultr:/# curl -fsSL http://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo apt-key add - OK

4、写入软件源信息

root@vultr:/# sudo add-apt-repository "deb [arch=amd64] http://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable" Hit:1 http://ubuntu.mirror.constant.com focal InRelease Hit:2 http://archive.ubuntu.com/ubuntu focal InRelease ......

5、开始安装Docker

root@vultr:/# sudo apt-get install docker-ce docker-ce-cli containerd.io Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: docker-buildx-plugin docker-ce-rootless-extras docker-compose-plugin pigz slirp4netns Suggested packages: aufs-tools cgroupfs-mount | cgroup-lite The following NEW packages will be installed: containerd.io docker-buildx-plugin docker-ce docker-ce-cli docker-ce-rootless-extras docker-compose-plugin pigz slirp4netns 0 upgraded, 8 newly installed, 0 to remove and 24 not upgraded. Need to get 121 MB of archives. After this operation, 434 MB of additional disk space will be used. Do you want to continue? [Y/n] y ......

中途出现问题的话，使用 sudo apt-get update 试试

6、启动docker服务

root@vultr:/# systemctl start docker

7、重启docker服务

root@vultr:/# service docker restart

8、查看docker版本信息

root@vultr:/# sudo docker version

9、查看docker镜像

root@vultr:/# sudo docker images

到此就安装完成了