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Docker changelog digest

Nov 24 - Nov 30, 2025. Useful releases, risky migrations, and noisy updates from the Docker channel.

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Docker updates in 2025-w48

2025-11-25, Version 20.19.6 'Iron' (LTS), @marco-ippolito

  • Updated crypto root certificates to NSS 3.114/3.116 and added security escalation and incident response documentation.
  • Deprecated HTTP/2 priority signaling and refreshed numerous docs (release verification, security policies, typo fixes, etc.).
  • Fixed several bugs: build implicit function declaration on OpenHarmony, REPL CPU overhead with large strings, test runner skipping logic, and other minor regressions.