优化安装流程

install_docker.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
 #####		CentOS 7安装Docker		#####
 
+function install_docker(){
 	cd
 	mkdir temp
 	cd temp
@@ -14,13 +15,49 @@ wget https://download.docker.com/linux/centos/7/x86_64/stable/Packages/docker-ce
 	yum -y install containerd.io-1.3.9-3.1.el7.x86_64.rpm
 	yum -y install docker-ce-19.03.9-3.el7.x86_64.rpm
 	yum -y install docker-ce-cli-19.03.9-3.el7.x86_64.rpm
+	#cd && rm -rf temp
+}
 
-#启动docker
+#配置存储目录
+function set_storage() {
+	user add -g docker docker
+	mkdir -p /etc/docker
+	#创建配置文件
+	touch /etc/docker/daemon.json
+	#创建存储目录
+	mkdir -p /data/docker-data
+	chown -R docker:docker /data/docker-data
+cat <<EOF > /etc/docker/daemon.json
+{
+    "data-root": "/data/docker-data",
+    "storage-driver": "overlay2"
+}
+EOF
+}
+#install systemc
+function install_systemd() {
+	cd && cd temp
+	wget -O docker.service 
+https://raw.githubusercontent.com/moby/moby/master/contrib/init/systemd/docker.service.rpm
+	mv docker.service /etc/systemd/system
+	systemctl daemon-reload
 	systemctl start docker
-#开机启动
 	systemctl enable docker
+}
 
-echo '----------------------------------------'
+#清理工作
+function clean_temp() {
+	cd && rm -rf temp
+}
 
+#测试运行
+function test_run() {
 	#运行一个hello word
 	docker run hello-world
+}
+
+install_docker
+set_storage
+install_systemd
+clean_temp
+test_run