Update Docker image references from JDK 17 to JDK 21 #2094
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Update all examples to use jenkins/jenkins:lts-jdk21 instead of lts-jdk17 to reflect the current recommended Jenkins Docker image. Fixes jenkinsci#2008
lemeurherve
approved these changes
Oct 9, 2025
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Summary
Updates all Docker image references in the README from
lts-jdk17tolts-jdk21to reflect the current recommended Jenkins Docker image version.Changes
jenkins/jenkins:lts-jdk17withjenkins/jenkins:lts-jdk21Testing
lts-jdk21tag exists on Docker Hublts-jdk17remainRelated Issues
Fixes #2008
Verification
Current Docker Hub tags show:
lts- Latest LTSlts-jdk21- LTS with JDK 21 (current)lts-jdk17- LTS with JDK 17 (previous)