Kubernetes/Docker uses too much disk space
It seems like it is expected behavior, from Docker documentation you can read:
Docker takes a conservative approach to cleaning up unused objects(often referred to as “garbage collection”), such as images,containers, volumes, and networks: these objects are generally notremoved unless you explicitly ask Docker to do so. This can causeDocker to use extra disk space. For each type of object, Dockerprovides a
prunecommand. In addition, you can usedocker system pruneto clean up multiple types of objects at once. This topic showshow to use theseprunecommands.
So it seems like you have to clean it up manually using docker system/image/container prune. Other issue might be that those containers create too much logs and you might need to clean it up.