https://github.com/SeleniumHQ/docker-selenium#running-the-images states that

When executing docker run for an image with Chrome or Firefox please either mount -v /dev/shm:/dev/shm or use the flag --shm-size=2g to use the host's shared memory.

These defaults are not applied for the BrowserWebDriverContainer as far as I can tell, which can cause hanging browsers on complex sites.