Docker installation steps

Official website: Install Docker Engine on CentOS | Docker Documentation

 1. Make sure you are CentOS7 and above

cat /etc/redhat-release

 2. Uninstall the old version

sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

3. Yum installs gcc related

yum -y install gcc

yum -y install gcc-c++

4. Install the required software packages

    yum-util provides yum-config-manager function, and the other two are devicemapper driver dependencies

yum install -y yum-utils device-mapper-persistent-data lvm2

5. Set the stable mirror warehouse (this cannot be set according to the requirements of the official website, and the domestic warehouse address must be set)