upd doc

README.md

@@ -1,2 +1,38 @@
-# docker-nomnoml
-Dockerized Nomnoml by Nginx And NJS.
+# Docker Nomnoml
+
+> Dockerized Nomnoml by Nginx And NJS.
+
+Docker Nomnoml is a simple but elegant self-hosted UML Generator & UML Sharing solution.
+
+## usage
+
+```bash
+docker run --rm -it -p 8080:80 soulteary/nomnoml
+```
+
+Base Nginx official docker image, for more information, refer to nginx container image [usage](https://hub.docker.com/_/nginx).
+
+## Components
+
+Does not include any software other than nginx and nomnoml, so that the resource usage is **very small** and the **performance is high enough**.
+
+### Nomnoml
+
+The sassy UML diagram renderer, created by [@Daniel Kallin](https://github.com/skanaar/) at [3 Jun 2014](https://github.com/skanaar/nomnoml/commit/211d19390d3615d86bced243c5878b8f4d535736).
+
+- [Nomnoml Docs](https://github.com/skanaar/nomnoml#web-application)
+- [Offical Website](https://www.nomnoml.com/)
+- [GitHub Repo](https://github.com/skanaar/nomnoml)
+
+### Nginx / NJS
+
+This Project use **Nginx script language (njs)** instead of Node as a server-side image generation solution.
+
+List some learning materials to help you step into the world of njs. Thanks to these open source authors and engineer of Nginx/F5, inc.
+
+- [soulteary/njs-learning-materials](https://github.com/soulteary/njs-learning-materials)
+
+## Benchmark
+
+TBD
+