Docker安装

1.

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

2.

 sudo yum install -y yum-utils

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

3.

yum install docker-ce docker-ce-cli containerd.io

4. start 以后就会看到docker0

systemctl start docker

 5.

docker run hello-world