How to increase the size of the /dev/shm in docker container

If you’re using docker-compose, you can set the your_service.shm_size value if you want your container to use that /dev/shm size when running or your_service.build.shm_size when building.

Example:

version: '3.5'
services:
  your_service:
    build:
      context: .
      shm_size: '2gb' <-- this will set the size when BUILDING
    shm_size: '2gb' <-- when RUNNING 

Link to source.