This is a lecture that seems to be kindly taught by a close school senior. 
Rather than writing a single line of commands, this is a good lecture that defines why Docker appeared, how it is used, and how to use it well. If you are new to Docker, I strongly recommend starting with this lecture.

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Hello Jongmin. This is Devwiki. Thank you for your recommendation! We will come back with better lectures in the future. 😀

A new curriculum that incorporates the experiences of working developers using Docker, providing lectures that are different from existing textbooks and lectures. It starts from the fundamental question of why Docker should be used, rather than simple command usage.