linux安装指定版本docker(笔记)

1.卸载老版本docker

yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-selinux \
                  docker-engine-selinux \
                  docker-engine \
                  docker-ce

2.下载安装包               

         查看Linux版本

cat /proc/version

        前往docker（Index of linux/centos/)官网下载相应安装包。以下以centos8.5为例，下载目为Index of linux/centos/8/x86_64/stable/Packages/

3.安装docker引擎        

        前往安装包所在目录，执行以下命令

 sudo yum install ./***.rpm

4.启动docker

systemctl start docker

5.通过运行hello-world镜像，验证docker是否安装成功

docker run hello-world