I see now, that makes sense why you are building the image since it was set up that way. I don’t know why projects set up the compose file to build the image when they already have a publicly available image to use; it just creates unnecessary friction for people who just want to test out the software. Anyway, using that image should work for you, but feel free to ask if you run into any issues.
I have a few mechanical keyboard projects that I need to print cases for and a chassis for a compact NAS build that I’m almost done tweaking and need to print eventually. Just functional stuff really