diff --git a/docker_install_centos.sh b/docker_install_centos.sh
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+++ b/docker_install_centos.sh
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+#!/bin/bash
+#author: MonsterTan
+#date: 2019-01-15
+#this is a script that can install automatically docker software by centos7
+
+
+
+function checkSudo (){
+        if [ $UID -ne 0 ];then
+                echo -e 'it must be root!'
+                exit 1
+        fi
+}
+
+checkSudo
+
+## something required system utils
+yum install -y yum-utils device-mapper-persistent-data lvm2
+
+
+## add repo source info
+sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
+
+
+sudo yum mackecache fast 
+sudo yum -y install docker-ce
+sudo systemctl start docker
+
+
+str=successed!
+if [ $? -eq 0 ];then
+	echo -e "\033[32msuccessed!\033[0m"
+else
+	echo -e "\033[31msomething wrong, please check!\033[0m"
+fi
+
+echo  -e "\033[31mstart to install docker-compose\033[0m"
+
+result=`ls /usr/bin/ | grep ^pip$`
+if [ ${#result} -eq 0 ];then
+	echo -e "\033[31mpip must be necessary, it should be installed firstly\033[0m"
+fi
+
+sudo pip install docker-compose
+