how to setting log level

[owooov]

Is this a BUG REPORT or FEATURE REQUEST?:

Description

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How to reproduce

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What do you expect

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What happened instead

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Software:

• docker version: [Add the output of docker version here, both client and server]
• Spotify's docker-client version: [Add docker-client version here]

Full backtrace

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[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.