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v0.21.8 - 2026-07-29
Changed
Changeset diffs are now computed from filesystem metadata instead of full-content comparison, significantly speeding up diff computation for large directories. by @marcosnils in #13615
Fixed
Dockerfile build layer caching so unrelated build-context changes no longer bust the cache: COPY-ed directories now get a content-based cache identity, re-keying downstream steps only when copied content
actually changes. by @marcosnils in #13765
The --x-release CLI re-exec so _EXPERIMENTAL_DAGGER_RUNNER_HOST is preserved (with a warning) instead of being stripped, and clarified its startup message to avoid implying it runs from any build. by @tiborvass in #13752
Silent SDK sessions no longer retain frontend telemetry in memory while Cloud and OTLP export remain enabled. DAGGER_SILENT is now honored as the equivalent of --silent. by @sipsma in #13762