diff --git a/docker/docker.md b/docker/docker.md
index 8224002..f775d84 100644
--- a/docker/docker.md
+++ b/docker/docker.md
@@ -32,3 +32,9 @@ sudo systemctl daemon-reload
 sudo systemctl restart docker
 ```
 
+## login
+
+``` bash
+docker login registry.cn-hangzhou.aliyuncs.com
+```
+
diff --git a/mongodb/install.md b/mongodb/install.md
index 83168a5..6c90993 100644
--- a/mongodb/install.md
+++ b/mongodb/install.md
@@ -4,5 +4,6 @@
 
 ``` bash
 docker pull mongo
-docker run -p 27017:27017 -v /data/db:/data/db -d mongo:3.2
+docker run -p 27017:27017 -v /data/db:/data/db -d mongo --name=mongodb
+sudo docker exec -i -t  id /bin/bash
 ```
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