[documentation (deploy)] deploy docsify in docker.

docs/deploy.md

@@ -135,3 +135,51 @@ frontend:
 | /<*>.md        | /<*>.md        | 200 (Rewrite) |
 | /<*>.png       | /<*>.png       | 200 (Rewrite) |
 | /<*>           | /index.html    | 200 (Rewrite) |        
+
+
+## Docker
+
+>There is a simple demo for building docsify in docker.
+
+?> tips: you can create all the files for this demo from [Quickstart](https://docsify.js.org/#/quickstart?id=initialize).
+
+- Preparing Docsify initial files  
+  You need prepare the initial files (generated by run `docsify init ./docs`) instead of making in container.
+
+  ```sh
+  index.html
+  README.md
+  ```
+
+- Dockerfile
+
+  ```Dockerfile
+    FROM node:latest
+    LABEL description="A demo Dockerfile for build Docsify."
+    WORKDIR /docs
+    RUN npm install -g docsify-cli@latest
+    EXPOSE 3000/tcp
+    ENTRYPOINT docsify serve .
+
+  ```
+
+  So, current directory structure should be this: 
+
+  ```sh
+   index.html
+   README.md
+   Dockerfile
+  ```
+
+- Build Image
+
+  ```sh
+  docker build -f Dockerfile -t docsify/demo .
+  ```
+
+- Run
+
+  ```sh
+  docker run -itp 3000:3000 --name=docsify -v $(pwd):/docs docsify/demo 
+  ```
+