List memory usage per Docker container

container-memory.sh

#!/bin/sh
# Lists memory usage per Docker container
#
# FORMAT:
#
# IMAGE:TAG	MEMORY_USAGE	CONTAINER ID

for i in `find /sys/fs/cgroup/memory/docker/* -type d`; do 
	CONTAINER_ID=`echo $i | awk -F'/' '{print $7}'`
	MEMORY_USAGE=$((`cat $i/memory.usage_in_bytes`/1024/1024))
	CONTAINER_NAME=`docker ps --no-trunc | grep $CONTAINER_ID | awk '{print $2}'`
	printf "%30s\t%5sM\t%s\n" $CONTAINER_NAME $MEMORY_USAGE $CONTAINER_ID
done

pmoust/mongo:v0.2     144M  618f53409bc5821a00a74c27954cb7470021cf8d44d5a0d9c786ce22d7c1e9c4
pmoust/redis:latest    42M  734d7dc2818c80eb485b6ffcdd6d5faa4633dbe0314ebdd54cdf55d62207f54e