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Docker · Concept

Build cache

Docker reuses build layers when their instructions and input files are unchanged. Improve reuse by ordering layers carefully, shrinking the build context, using bind or cache mounts, and sharing an external cache.

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Syntax

docker buildx build --cache-from <cache-source> --cache-to <cache-destination> <context>

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  • Cache invalidation
  • Build cache optimization
  • Cache mounts
  • External cache
  • Build context
  • .dockerignore files

Source: Optimize cache usage in builds. Checked 2026-11-03.