By default docker uses a shm size of 64m if not specified, but that can be increased in docker using --shm-size=256m
How should I increase shm size of a kuberenetes cont
It's not possible to do this in a kubernetes pod. See this issue
There is a workaround from openshift mentioned in the comments, but it may not be ideal
EDIT: at the time this question was asked, this was not possible. It now is, see https://stackoverflow.com/a/47921100/645002 for the correct answer