卸載舊版本：
yum remove docker docker-client docker-client-lastest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-selinux docker-engine-selinux docker-engine
洗掉檔案：
rm -rf /etc/systemd/system/docker.service.d
rm -rf /var/lib/docker
rm -rf /var/run/docker
安裝新版本：
yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo http://download.docker.com/linux/centos/docker-ce.repo
yum-config-manager --enable docker-ce-edge
yum-config-manager --enable docker-ce-test
yum-config-manager --disable docker-ce-edge
yum install docker-ce
systemctl start docker
systemctl status docker
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標籤：其他