check_docker_memory function

.bashrc-snippet

function check_docker_memory {
	for id in $(docker ps -q --no-trunc); do
		name=$(docker inspect -f "{{.Name}}" $id)
		echo $(numfmt --to=iec --suffix=B $(cat /sys/fs/cgroup/memory/system.slice/docker-$id.scope/memory.usage_in_bytes)) ${name#/}
	done
}

Inspired by https://www.aerofs.com/blog/a-little-golang-way/

Even though sort -n may be wrong now, you can still check_docker_memory | sort -h

One major thing that changed from the AeroFS version: I run docker on an OS with systemd, so the cgroup structure is slightly different (it's in system.slice for me)