[test] add mermaid support

[Ran-Xing]

Please make sure to check the following boxes creating your pull request, thank you very much!

• Add Blog Header, including title, author, image, categories, tags, etc.

  For example:

  ---
  title: Your Great Blog Title
  author: your_github_id
  categories: project
  tags:
    - python
    - padlocal
  image: /assets/2021/02-your-blog-slug/teaser.jpg
  ---
  
  One line bio
  
  Your blog post content Your blog post content
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  Your blog post content Your blog post content

  It will be easier to start drafting your post by using a existing post file as your template, for example, this one

• Keep all filenames lowercase, and use - to connect words instead of space. e.g. 2017-10-06-wechat-pc-impactor.md instead of 2017-10-06-WeChat PC Impactor.md

• Embed video/pdf from YouTube/Bilibili/local (if there's any) by using {% include iframe.html src="URL_or_PATH" %}. (Learn more about how to embed file/url in the post by reading this blog post

• Save photo to local before publishing, to a folder named by ${MONTH}-${YOUR_BLOG_SLUG}/ under /assets/2021/ directory.

• Select a beautiful and meaningful teaser image for your blog

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  For excample:

  jekyll/_contributors/lijiarui.md

  ---
  name: Jiarui LI (李佳芮)
  site: https://lijiarui.github.io
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  avatar: /jekyll/assets/contributors/lijiarui/avatar.png
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  twitter: https://weibo.com/u/2175505900
  ---

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  • lijiarui.md: https://github.com/wechaty/wechaty.js.org/blob/master/jekyll/_contributors/lijiarui.md
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[huan]

Thank you very much for adding the mermaid support!

Please let me know when you finished testing and it's good to be merged.

[huan]

I think this PR is useful for our website, and I'd like to see it be keeping improved so that we can merge it after everything is good.

[Ran-Xing]

@huan 这个环境我不太会使用，主要是启动方式我很懵，根据里面的docker 文档启动也有点问题😂

[huan]

@zhihuifanqiechaodan thanks for the approval!

Could you confirm that this PR is working as expected?

[Ran-Xing]

是不是需要重新发起PR，好像文件并没有更新

[zhihuifanqiechaodan]

@zhihuifanqiechaodan thanks for the approval!

Could you confirm that this PR is working as expected?

我看到checks都通过了，sorry。

[huan]

That's all right.

This is a functional PR and we have merged it but it seems that not work as expected.

See:

• jekyll 对 mermaid 的支持 #102 (comment)

[Ran-Xing]

我在HTML 开发者工具里面看了，并没有 unpkg.com 请求，说明 js 文件并没有生效

[huan]

It seems that we missed something... Can we take a look at it and try to find out the fix?