This is a really great lecture. It's packed with the core essentials, the necessary content is explained in an easy-to-understand way, and you show things that are practical for use in the field, which is great. After learning this much, I think I'll be able to use Docker without any difficulty, so now I just need to get the hang of it. If I need to use Docker more extensively later, it will be a foundation that allows me to move forward. However, I'm not sure if it's just me, but the completion rate isn't reaching 100%, perhaps because of the survey at the end of the lecture. I would feel much better if it were at 100%.