Answer
It stores metadata and image/layer information in /var/lib/docker.
Quick Answer
The Docker daemon persists state in /var/lib/docker — container configs, volume metadata, network definitions, image layers. On daemon start, it reads this state and reconciles with the actual running containers. This is how Docker survives restarts and knows which containers should be restarted automatically.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ