diff --git a/docker/docker.md b/docker/docker.md
index 8224002..c12ad3b 100644
--- a/docker/docker.md
+++ b/docker/docker.md
@@ -2,8 +2,8 @@
 
 ## step 1: 安装必要的一些系统工具
 
-sudo apt-get update
-sudo apt-get -y install apt-transport-https ca-certificates curl software-properties-common
+sudo apt update
+sudo apt -y install apt-transport-https ca-certificates curl software-properties-common
 
 ## step 2: 安装GPG证书
 
@@ -15,8 +15,8 @@ sudo add-apt-repository "deb [arch=amd64] http://mirrors.aliyun.com/docker-ce/li
 
 ## Step 4: 更新并安装 Docker-CE
 
-sudo apt-get -y update
-sudo apt-get -y install docker-ce
+sudo apt -y update
+sudo apt -y install docker-ce
 
 
 ## 加速
@@ -32,3 +32,18 @@ sudo systemctl daemon-reload
 sudo systemctl restart docker
 ```
 
+## not to type sudo 
+
+``` bash
+cat /ect/group
+# if docker grouo not exist , then run this command: sudo groupadd docker
+
+sudo gpasswd -a ${USER} docker
+# add me into docker group
+
+sudo service docker restart
+
+reboot  # or relogin
+
+```
+
diff --git a/mongodb/install.md b/mongodb/install.md
index 83168a5..d925cc8 100644
--- a/mongodb/install.md
+++ b/mongodb/install.md
@@ -5,4 +5,17 @@
 ``` bash
 docker pull mongo
 docker run -p 27017:27017 -v /data/db:/data/db -d mongo:3.2
+```
+
+## adminmongo
+
+``` bash
+
+git clone https://github.com/mrvautin/adminMongo.git
+
+cd adminMongo
+
+npm install 
+npm start
+
 ```
\ No newline at end of file
diff --git a/nodejs/install.md b/nodejs/install.md
index 8ed93b9..7f66870 100755
--- a/nodejs/install.md
+++ b/nodejs/install.md
@@ -9,9 +9,15 @@ sudo apt install nodejs
 sudo apt install npm
 sudo npm install n@latest -g
 sudo n stable
-npm install npm@latest -g
+sudo npm install npm@latest -g
 node -v
 npm -v
+
+sudo npm install -g cnpm --registry=https://registry.npm.taobao.org
+
+#or
+npm config set registry https://registry.npm.taobao.org
+npm config get registry
 ```
 
 - if error: /usr/bin/env: node: No such file or directory