Update Elasticsearch to 9.2.3 and remove built-in plugins

[JeWcLee]

Following plugins are built in after 8.x, so removed these plugins from Dockerfile

• ingest-attachment
• repository-s3

Summary by CodeRabbit

• Chores
  • Upgraded Elasticsearch base to 9.2.3 (from 8.18.2).
  • Adjusted plugin installation list to match the new Elasticsearch version.
  • Retained key language analysis plugins for multilingual support.
  • Cleaned up the recorded version entry to reflect the upgrade.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

📝 Walkthrough

Walkthrough

Dockerfile updated to use elasticsearch:9.2.3; plugin install list changed (removed ingest-attachment and repository-s3) and analysis-ik plugin URL aligned to 9.2.3. elasticsearch-a1/version.txt had its single version line removed (file now empty).

Changes

Cohort / File(s)	Summary
Elasticsearch Base Image & Plugins elasticsearch-a1/Dockerfile	Base image bumped to elasticsearch:9.2.3; removed ingest-attachment and repository-s3 from the batch install; updated analysis-ik plugin URL to match 9.2.3; retained analysis-icu and analysis-kuromoji.
Version Metadata elasticsearch-a1/version.txt	Removed the 8.18.2-20260106-r1 entry; file is now empty (no version string present).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐇 A hop for the base, a twitch for the plug,
I nudged the version, gave old lines a shrug.
Plugins trimmed tidy, URLs set anew,
The rabbit approves — a small change, true! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately and concisely describes the main changes in the pull request: updating Elasticsearch to 9.2.3 and removing built-in plugins.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

---

---

📜 Recent review details

Configuration used: defaults

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 1689de6 and 37bd3a9.

📒 Files selected for processing (1)

• elasticsearch-a1/version.txt

💤 Files with no reviewable changes (1)

• elasticsearch-a1/version.txt

_{✏️ Tip: You can disable this entire section by setting review_details to false in your review settings.}

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}