$ docker run -it -m 4m ubuntu:14.04 bash
root@cffc126297e2:/# \
python3 -c 'open("/dev/zero").read(10*1024*1024)'
Killed
root@e9f13cacd42f:/# \
A=$(dd if=/dev/zero bs=1M count=10 | base64)
$
$ echo $?
137
