I started coding through Janjaemi Coding's lecture. I took the course last year because I was curious about Docker, even though I had nothing to write about. I was lazy and didn't write a course review. I studied Linux, C, Bash shell, and operating systems for about a year, and then I had to use Docker again this time, so I reviewed it. I was proud that concepts like Linux's standard stream and process concepts that I couldn't understand at the time were so naturally understood this time. It was rewarding because I felt like I hadn't studied in vain for the past year. I also felt like I had grown. It's a course review, so it might seem like I'm talking nonsense, but I wrote it anyway. Haha Thank you for making such a great lecture.