Nexus 51405 java25 upgrade

[saicharanvennapusa]

JIRA_TICKET
https://sonatype.atlassian.net/browse/NEXUS-51563

Description

Upgrades Docker images from Java 21 to Java 25 for Nexus Repository Manager

Changes

• Renamed all Dockerfile..java21 files to Dockerfile..java25
• Updated package installations:
  • Alpine: openjdk21 → openjdk25
  • UBI9: java-21-openjdk-headless → java-25-openjdk-headless
• Updated all Jenkinsfiles
• Updated README.md to reflect Java 25 runtime

Verification

• ✅ Alpine openjdk25 package confirmed available
• ✅ UBI9 java-25-openjdk-headless package confirmed available
• ✅ Docker images build successfully
• ✅ NXRM containers start and run successfully with Java 25

[archit-mathur]

Code Review: NEXUS-51405 Java 25 Upgrade

⚠️ Warning — Jenkinsfile.rh references Dockerfile.rh.ubi (no Java version suffix)

Jenkinsfile.rh:36 changes dockerfilePath to 'Dockerfile.rh.ubi.java25' but the old value was 'Dockerfile.rh.ubi' (no java suffix). This means there was previously a Dockerfile.rh.ubi file — is this file still present/needed, or was it already renamed to Dockerfile.rh.ubi.java21 before this PR? The PR renames Dockerfile.rh.ubi.java21 → Dockerfile.rh.ubi.java25 but does not remove or alias any unversioned Dockerfile.rh.ubi. Verify no other pipeline or external reference depends on the old Dockerfile.rh.ubi path.

ℹ️ Info — Changes look correct overall

• Alpine: openjdk21 → openjdk25 — PR confirms package availability ✅
• UBI9/UBI: java-21-openjdk-headless → java-25-openjdk-headless — PR confirms package availability ✅
• All Jenkinsfile variable renames (JAVA_21 → JAVA_25, DOCKERFILE_JAVA_21 → DOCKERFILE_JAVA_25) are consistent
• README.md updated correctly to reference new Dockerfile names and Java 25 runtime
• GitHub Actions workflow updated consistently

ℹ️ Info — No test changes

No test files included. For a Dockerfile-only repo this is expected, but it would be good to confirm CI smoke tests pass (container starts, java -version returns 25) before merge.

[saicharanvennapusa]

When upgrading to java 21 Dockerfile.rh.ubi.java21 name is not updated , it is in Dockerfile.rh.ubi. now updated to Dockerfile.rh.ubi.java25 correctly and updated Readme

[archit-mathur]

PR #276 Review: NEXUS-51405 Java 25 Upgrade (docker-nexus3)

📋 Ticket Alignment

• Jira Ticket: NEXUS-51405 / NEXUS-51563
• Scope Alignment: ✅ Aligned — Dockerfile renames java21→java25, Jenkinsfile updates

✅ What This PR Does Well

• Consistent renames across all Dockerfiles (*.java21 → *.java25)
• All three Jenkinsfiles updated consistently
• README and GitHub Actions updated
• Package availability verified by author for both Alpine and UBI9
• Build and runtime test results documented in PR

🔍 Findings (Non-blocking)

#	Severity	File	Finding	New/Pre-existing
1	⚠️	Jenkinsfile.rh:36	Changed from 'Dockerfile.rh.ubi' to 'Dockerfile.rh.ubi.java25' — please confirm no other pipelines reference the old unversioned Dockerfile.rh.ubi path	NEW

😈 Devil's Advocate

• The PR comment from saicharanvennapusa (2026-04-08) confirms this rename was intentional and correctly handled

🧪 Functional Testing

Recommend verifying:

1. All Docker images build with Java 25 packages
2. java -version inside container shows OpenJDK 25
3. Jenkinsfile.rh produces a valid Red Hat certified image

📊 Verdict

• Recommendation: APPROVE
• Confidence: High
• Risk Level: Low (file renames and reference updates only)

🤖 Generated with Claude Code