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[🐛 Bug]: Could not start a new session. Response code 500. Message: Failed to read marionette port #2020

@diemol

Description

@diemol

What happened?

When using any of the Firefox images and a random user ID (not the seluser ID in Ubuntu), session creation fails and GeckoDriver responds with "Failed to read marionette port".

Command used to start Selenium Grid with Docker

docker run --user 24397 -d -p 4444:4444 --shm-size="2g" selenium/standalone-firefox:4.15.0-20231122

Relevant log output

Could not start a new session. Response code 500. Message: Failed to read marionette port

Operating System

Any of them

Docker Selenium version (tag)

4.15.0-20231122

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