The question kind of reminds me to a german saying: having is better then needing *cough*
In computer science, we have practical patterns like YAGNI (You Aren't Gonna Need It). In summary: do things when you need them, not when you think they might become usefull in the future. Without YAGNI you might end up loosing time without gaining any benefits - while the safed time can be spend with useful things in the present
If you want to dig into docker itself, I highly recommend this self paced training. Don't be intimidated by the number of slides, you can rush through many of them.
What I like about pwndrop is that it shows the shared PDF and JPG files on the browser page. When using DSM’s shared links it forces the receiver to dload the file to view it, so I tend to share a lot of project –quick reference– PDFs that way.