shell腳本安裝docker及拉取php環境的所有鏡像

話不多說，直接貼上shell腳本

#!/bin/bash
#auto install docker and pull images
#by yanlichao 20190923
#Define PATH Varablies

# docker安裝 
function docker_install()
{
	echo "====檢查docker是否安裝========="
	docker -v
	if [ $? -eq  0 ]; then
		echo "====檢測到docker已經安裝===="
	else 
		echo "====開始yum安裝docker==="
        yum update -y
		yum install docker-io -y
		echo "====docker 安裝完成=="
	fi
	echo "====啓動docker===="
	systemctl start docker.service
	echo "====docker啓動完成===="
}
# docker 拉取鏡像
function docker_pull_images()
{
    # 獲取已經有的所有鏡像
    existImages=(`docker images |awk '{print $1":"$2}' ""`) # 獲取當前所有鏡像
    # 獲取鏡像個數
    existImagesNum=${#existImages[@]}
	#echo $Doc_Ima_i
	# 需要拉取的鏡像
	needImages=(
		"registry.cn-shenzhen.aliyuncs.com/ylxq/redis3.2:20190919"
		"registry.cn-shenzhen.aliyuncs.com/ylxq/mysql5.7:20190919"
		"registry.cn-shenzhen.aliyuncs.com/ylxq/nginx:20190919"
		"registry.cn-shenzhen.aliyuncs.com/ylxq/memcached:20190919"
		"registry.cn-shenzhen.aliyuncs.com/ylxq/php72-fpm:20190919"
	)
	needImagesNum=${#needImages[@]}
	#echo needImagesNum

	# 查看鏡像是否存在
	for (( i = 0; i < needImagesNum; i++ )); do
        	#echo ${needImages[$i]}
        isExist=0	
        for (( j = 0; j < existImagesNum; j++ )); do
        	#echo ${existImages[$j]}
        	if [[ ${needImages[$i]}  =  ${existImages[$j]} ]] ;  then
        		isExist=1
        		break
        	fi
        done
        if [[ $isExist -eq 1 ]]; then
        	echo ${needImages[$i]}"存在"
        else
        	echo ${needImages[$i]}"不存在"
      		# 拉取不存在的鏡像
        	docker pull ${needImages[$i]}
        fi
    done
}

# 安卓docker-compose
function install_dockercompose()
{
	echo "====檢查是否安裝docker-compose===="
	docker-compose version
	if [ $? -eq  0 ]; then
		echo "====檢測到docker-compose已經安裝===="
	else 
		echo "====開始安裝docker-compose==="
		curl -L https://github.com/docker/compose/releases/download/1.23.0-rc3/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose
		chmod +x /usr/local/bin/docker-compose
		echo "====docker-compose 安裝完成=="
	fi

}
# 安裝並啓動docker
docker_install

# docker拉取鏡像 
docker_pull_images

# docker-compose 安裝
install_dockercompose