modify mkdocs (#278)

* remove github workflow

* update mkdocs.yml and add mkdocs.md

* add site/ to .gitignore

* leave requirements.txt in docs/

* update mkdocs.md

docs/README.md

@@ -1,20 +0,0 @@
-# OceanBase Documentation
-Welcome to the OceanBase documentation!
-
-This directory stores all the source files of OceanBase documentation website.
-
-## Starting a server locally
-
-OceanBase documentation website is built with [MkDocs](https://www.mkdocs.org/). To install all dependencies, run:
-
-    $ pip install -r ./requirements.txt
-
-Generate the site, and start a server locally:
-
-    $ mkdocs serve
-
-Open up http://127.0.0.1:8000/ in your browser, and you'll see the default home page.
-
-## Contributing
-
-See [How to Contribute](../CONTRIBUTING.md).

docs/mkdocs.yml

@@ -1,10 +0,0 @@
-site_name: OceanBase 手册
-repo_url: 'https://github.com/oceanbase/oceanbase'
-repo_name: 'OceanBase'
-edit_uri: 'edit/master/docs/'
-docs_dir: './'
-site_dir: '../site'
-theme:
-  name: 'material'
-nav:
-  - Home: 'index.md'