- 切换到root用户
sudo su -
- 切换到/tmp目录
cd /tmp
- 下载docker-ce安装包及依赖包（2021.10.21时点最新版）
wget https://download.docker.com/linux/centos/7/x86_64/stable/Packages/containerd.io-1.4.9-3.1.el7.x86_64.rpm wget https://download.docker.com/linux/centos/7/x86_64/stable/Packages/docker-ce-20.10.9-3.el7.x86_64.rpm wget https://download.docker.com/linux/centos/7/x86_64/stable/Packages/docker-ce-cli-20.10.9-3.el7.x86_64.rpm wget https://download.docker.com/linux/centos/7/x86_64/stable/Packages/docker-ce-rootless-extras-20.10.9-3.el7.x86_64.rpm wget https://download.docker.com/linux/centos/7/x86_64/stable/Packages/docker-scan-plugin-0.8.0-3.el7.x86_64.rpm wget https://www.rpmfind.net/linux/centos/7.9.2009/extras/x86_64/Packages/container-selinux-2.119.2-1.911c772.el7_8.noarch.rpm wget https://www.rpmfind.net/linux/centos/7.9.2009/extras/x86_64/Packages/fuse-overlayfs-0.7.2-6.el7_8.x86_64.rpm wget https://www.rpmfind.net/linux/centos/7.9.2009/extras/x86_64/Packages/slirp4netns-0.4.3-4.el7_8.x86_64.rpm wget http://mirror.centos.org/centos/7/extras/x86_64/Packages/fuse3-libs-3.6.1-4.el7.x86_64.rpm
- 安装docker-ce
sudo yum localinstall -y *.rpm
- 确认docker版本
sudo docker -v
- 启动docker并且设置开机自动启动
sudo systemctl enable --now docker
- 确认docker信息
docker info
- 如果想让非root用户使用，比如opc，执行下面命令
sudo usermod -a -G docker opc
- 切换到opc用户
su - opc
- 用opc用户确认
whoami
docker info
完结！
