diff --git a/docker/README.md b/docker/README.md
new file mode 100644
index 0000000..66dddad
--- /dev/null
+++ b/docker/README.md
@@ -0,0 +1,91 @@
+# Build Docker image
+
+* [Reference](https://nodejs.org/en/docs/guides/nodejs-docker-webapp/)
+
+* Command
+
+  ```bash
+  // run with interactive shell
+  $ docker run -it <image> /bin/bash
+  
+  // list running process
+  $ docker ps
+  
+  // list images
+  $ docker images
+  
+  // 
+  $ docker exec -it <container id> /bin/bash
+  
+  // print app output
+  $ docker logs <container id>
+  
+  // build docker image. image name cannot use camel case
+  $ docker build -t <target-image-name> .
+  
+  // store image in tart file
+  $ docker save <generated-image-name> -o ./store/<generated-image-name>.tar
+  
+  // upload tar image to server
+  $ rsync -rzvP ./store/<generated-image-name>.tar ubuntu@<serverip>:~/apps/<image-name>/
+  
+  $ ssh ubuntu@<serverip>
+  $ cd ~/apps/<image-name>
+  $ docker-compose stop
+  $ docker load -i <image-name>.tar
+  $ docker-compose up -d --build
+  ```
+
+  
+
+* testing http
+
+  ```bash
+  $ curl -i localhost:5000
+  
+  HTTP/1.1 200 OK
+  X-Powered-By: Express
+  Content-Type: text/html; charset=utf-8
+  Content-Length: 12
+  ETag: W/"c-M6tWOb/Y57lesdjQuHeB1P/qTV0"
+  Date: Mon, 13 Nov 2017 20:53:59 GMT
+  Connection: keep-alive
+  
+  Hello world
+  ```
+
+  
+
+* sample deploy script
+
+  ```bash
+  # docker way
+  docker build -t razer-pay-direct-fast-middleware:latest .
+  docker save razer-pay-direct-fast-middleware:latest -o ./docker-local/razer-pay-direct-fast-middleware.tar
+  
+  # upload docker image and compose file to the server
+  rsync -rzvP ./docker-local/razer-pay-direct-fast-middleware.tar docker-compose.yml ubuntu@172.88.1.101:~/apps/razer-pay-direct-fast-middleware/
+  
+  ssh ubuntu@172.88.1.101 << EOF
+      cd ~/apps/razer-pay-direct-fast-middleware
+      pwd
+  
+      echo "Stopping Container..."
+      docker-compose stop
+  
+      echo "Loading new Docker image..."
+      docker load -i razer-pay-direct-fast-middleware.tar
+  
+      echo "Restarting Container..."
+      docker-compose up -d --build
+  
+      echo "Container restarted."
+  
+  EOF
+  
+  echo "Deployed successfully."
+  ```
+
+  
+
+* s
\ No newline at end of file
diff --git a/redis/README.md b/redis/README.md
index c85fdff..1db2afc 100644
--- a/redis/README.md
+++ b/redis/README.md
@@ -11,7 +11,7 @@
 * login redis with password = admin
 
   ```sh
-  $ redis-cli -p admin
+  $ redis-cli -a admin
   ```