Docker installation and configuration command code examples

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

sudo yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

sudo yum install docker-ce

# Start automatically at boot sudo systemctl enable docker 
# Start the docker service sudo systemctl start docker

# 1. View the installed docker:
docker images
# 2. Uninstall docker:
sudo yum remove -y XXX
# 3. Delete the container image:
sudo rm -rf /var/lib/docker
# 4. Reinstall Docker
sudo yum install docker-ce
# 5. Docker running status docker ps -a