1、用一臺可以連外網的虛擬機器把docker-ce安裝包下載下來，vim /tmp/docker-download.sh

#!/bin/bash
set -e
mkdir -p /apps/docker-ce-v18
yum install --downloadonly --downloaddir=/apps/docker-ce-v18  yum-utils device-mapper-persistent-data lvm2 createrepo  libseccomp libsepol libcgroup container-selinux
cd /apps/docker-ce-v18
yum install
 
 -y *.rpm
yum install -y yum-utils device-mapper-persistent-data lvm2
cd /etc/yum.repos.d/
mkdir old
mv CentOS* old
yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum makecache fast
yum install --downloadonly --downloaddir=/apps/docker-ce-v18 docker-ce
cd /apps
tar
 
 zcvf docker-ce-v18.tar.gz docker-ce-v18/

執行下載指令碼

cd /tmp
sh docker-download.sh

2、把安裝包docker-ce-v18.tar.gz傳到離線伺服器的/tmp/目錄，vim /tmp/docer-install.sh

#/bin/bash
set -e
cd /tmp
tar xvf docker-ce-v18.tar.gz
cd /tmp/docker-ce-v18
yum -y install *.rpm
systemctl start docker
systemctl enable  docker
systemctl status  docker
docker 
 
info

最後看到docker的資訊後，安裝完成。