Issue Docker overlay2 keep growing in size

[Grasmachien]

Server operating system version

Ubuntu 22.04.4 LTS

Plesk version and microupdate number

Plesk Obsidian 18.0.63

I am using the Docker extension in order to run a mysql database server because Plesk only supports MariaDB by default.
This works as expected, however for some reason the folder /var/lib/docker/overlay2/952190098a02a4a5a2283980c8a79a7850330c8f3eb4e2fc2bcce6b8e78ee245/merged has grown to a whopping 135GB.

It is not a problem yet but if it keeps growing it might become one.
It seems like there is no way to limit the disk space for a docker container in the Plesk extension.

Is there another solution to clean the folder and free up disk space?

 

[yspirin]

The file in the /var/lib/docker/overlay2 directory with the container ID you specified is a merged layer of the Docker container's filesystem. This file grows because files are actively being created or modified in the container.
It is impossible to limit the container volume using docker extension. However, you can try to launch the container via the command line using the --storage-opt option.

docker run --name db --storage-opt size=1G mysql