Depending on if you put its volume in the image or a directory you need to look there. Check size or whichever it is. I believe for directory it’s du -h and for docker you could docker ps to see all.
Oh I see you say taking the directory size takes too long… how could that take more than 10 seconds…? Are you not using CLI
As a researcher everyday is the same. So, either all of them or none of them I guess