Docker: generate a Dockerfile from an image
按 AndrewD on How to generate a Dockerfile from an image?，可以这么操作:
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Syntax Highlighting less
Stéphane Chazelas on Syntax highlighting in the terminal 总结得挺好，以下方法都可以 highlight less 命令的 output：
Python: asyncio
1. yield is a pun
Terminology Recap: Preemptive / Cooperative / Multitasking / Multithreading / Race Condition
Preemptive / Cooperative / Multitasking
Python: super()
super() 实在是有点复杂，所以它的 doc 的信息量看起来就很有限。