Add document using file as the config center

[lvekee]

Why you need it?

Add document using file as the config center.
If you want to fix it, please comment "Please assign it to me" is this issue.

增加file作为配置中心的文档
如果你有兴趣修复这个问题的话, 请在下方留言 Please assign it to me

How it could be?

A clear and concise description of what you want to happen. You can explain more about input of the feature, and output of it.

Other related information

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