Docker Scout Completely Filling Disk Space with Temporary Files

[david-engelmann]

I've recently updated my Docker Desktop and it added in Docker Scout, after a few days of normal use. My computer had filled entirely with temporary files in the AppData\Local\Temp directory. The folder was called Docker Scout. It shouldn't do that

[eunomie]

Hi 👋
This folder is only about temporary files, so files should be automatically removed once handled.

Question to better understand how it happens: did you used the docker scout CLI or only the UI of desktop?

Starting with v0.23.2 you can now run docker scout cache df to list all the temporary and cached files and docker scout cache prune will allow to remove them.

[david-engelmann]

@eunomie I didn't use the docker scout commands from a terminal, I didnt even really engage in docker scout from the Docker Desktop UI. It was added on update, I continued to use docker as normal, building, rebuilding etc. for a work day, max two. By the time I noticed it was creating lots of temporary files, It had stored over 500gb of temporary files and my disk space had hit zero

[eunomie]

Ok, that's definitely unexpected.
A few other questions if you don't mind, just to better understand your use case and target the issue.
What type of image is it? Is that for instance big images? Let's say more than a few GB?
Are you also building windows images?

[david-engelmann]

2 redis-alpine and 2 ubuntu 20.04 images, nothing over 2.5 GBs

[david-engelmann]

This issue still persist, Docker scout is claiming around 500gb's of space ever two to three weeks.

[davidhewitt]

I'm having the same problem. Looks like docker-scout was installed in a Docker Desktop update a week ago and I have 300GB of temporary files generated by it already.

All my docker builds are done inside a WSL2 ubuntu container, otherwise I don't think I'm doing anything special.

[david-engelmann]

@davidhewitt Since I updated to a version with docker scout, I've had to periodically, delete all the folders in "~\AppData\Local\Temp\docker-scout\sha256" to stop it from consuming all my memory. It doesn't seem to clean up the past tar files when the container/image/volumes are deleted

[Troesler-illuminate]

I am experiencing this issue as well! 75GB of space until my computer (Windows 11) ran out of free storage space. I also do not use docker scout from the CLI, and have barely interacted with it using Docker Desktop (and WSL2 integration enabled).

[david-engelmann]

@Troesler-illuminate From what I'm seeing, it looks like docker scout is grabbing 2 or 3 gb ever time I build without caching. When I abandon the artifacts / old build setup to test changes etc, it's holding on to the scout results, until you clean them out manually, either by cli command or deleting the folders inside AppData

[joaquinalvarezdev]

Hey, just wanted to add here that I'm experiecing the same thing, I've updated docker and keep doing my workflow as usual and seems that every time I build an image it grabs almost 2.4GB and then it never gets cleaned up. Im using Windows 11 and have setup docker desktop with WSL2

[razmser]

Same here, docker-scout ate up all space. I don't even knew it existed before.
Moving its cache away from C:\ somewhat helps
DOCKER_SCOUT_CACHE_DIR

[radman-rt]

@razmser How to set DOCKER_SCOUT_CACHE_DIR? Where is it located? How to change it? For Windows 10/Docker Desktop.

[david-engelmann]

any update here?

[zbarnz]

I am getting this issue. Ive only ever used the docker compose CLI and I'm having alot of disc space issues. One being these docker scout files. They dont get cleaned up by using docker desktops built in clean / purge functionality either. I have to run docker scout cache prune to free up the space after pruning all my other docker data.

[Michal-Zablocki]

Bump, updated docker today and my disk space hit 0 literally a few minutes later (and I had already disabled the experimental features before running the update).

[DoiiarX]

same problem