I use ‘du -Lhs’ to check directory size. How long does it take for you to run that command? The only time I’ve ever run into a ‘du’ command taking a long time is when running it over the network to a slow-ass 2010-era system in California for a project I was doing at work with hundreds of terabytes of data and millions of files.

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