Analyze & optimize your Dockerfile for best practices,
security, and smaller images
When you analyze or optimize a Dockerfile, its text, analysis results, and optimized output may be saved in your session history. We retain up to 50 entries per session for up to 24 hours. History is stored in Redis/Valkey when configured; otherwise it remains in application memory. Persistence after a Redis/Valkey restart depends on that service's configuration.
The session_id cookie contains a random session identifier, not Dockerfile contents. It is HttpOnly, uses SameSite=Lax, expires after 24 hours, and is marked Secure in this deployment.
Site address: https://dockercraft.unixawesome.com.
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