What I’m looking for is a way to take backup of Docker containers so I can restore them in case things go wrong. Doing so with VMs is so easy. If nothing works, I’ll make an image of my OS disk. Unless some benevolent self hoster tells me a simple way, which was my hope when posting here :D
I have mine from all my grades from primary to high school. My father wrote an analysis on the back of one after the term had ended and what I could have done for the grades to be better: basically to make tiny little improvements consistently throughout the year. I have come a long way but I still try to follow it.