session not created error

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Vladimir Djordjevic

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Sep 10, 2025, 6:35:06 AMSep 10
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Hi guys,

I m trying to run python selenium tests in a docker container and I m keep getting this error
: Message: session not created: probably user data directory is already in use, please specify a unique value for --user-data-dir argument, or don't use --user-data-dir. I tried adding different options from Chrome in the conftest file but it doen't help.

I m on Windows 11, I m using selenium 4.29.0 version 
YOu can clone my repo here:

Then navigate to root folder: ssqatest and then
1.build the image with this command
   docker build -t myseleniumtests .
2.run container with this command:
   docker run myseleniumtests

This way you will reproduce the error..
I have just started learning Docker -> so this seems hard to solve for me
I would really appreciate if someone could help..

Kind regards,
Vlada
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