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Last active January 9, 2020 10:22
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How to avoid "Bus error (core dumped)" when you run Firefox inside Docker container
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firefox-inside-docker.md

I met "Bus error (core dumped)" when I run Firefox with Selenium to capture screenshot of web sites.

firefox -headless -screenshot https://developer.mozilla.com
*** You are running in headless mode.
ExceptionHandler::GenerateDump cloned child ExceptionHandler::WaitForContinueSignal waiting for continue signal...
1218
ExceptionHandler::SendContinueSignalToChild sent continue signal to child
Unable to init server: Could not connect: Connection refused
Bus error (core dumped)

How to avoid it? The answer is simple, to increase SHM size.

version: '3'
services:
  firefox:
    build: .
    shm_size: 256m
docker run  --shm-size 256m
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