Run tests as user

[hadusam]

What this patch does to fix the issue.

In the default, docker run as root user and the permission of artifacts created by docker is root:root. This prevents some users and CI agents to clean up artifacts generated by tests.
So I changed to run tests as user permission by adding docker option.

Link to any relevant issues or pull requests.

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[iizukak]

Ownership Approval

[kchygoe]

LGTM!
Now docker option can be --gpus=. It would be discussed later

[hadusam]

/ready

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