I’ve seen several janitor container that cleanup periodically.
https://github.com/checkmate/remora
As I a build stuff, run compose, etc I run several commands to clean up…
# remove untagged images
docker rmi $(docker images | grep none | awk '{ print $3}')
# remove unused volumes
docker volume rm $(docker volume ls -q )
# `shotgun` remove unused networks
docker network rm $(docker network ls | grep "_default")
# remove stopped + exited containers, I skip Exit 0 as I have old scripts using data containers.
docker rm -v $(docker ps -a | grep "Exit [1-255]" | awk '{ print $1 }')