chore(compose): pin app images to v2.0.0-rc.2 instead of latest

[Ahmath-Gadji]

What

Pin the two application images in infra/compose/docker-compose.yaml to the current published v2 tag instead of the floating latest:

• linagoraai/openrag:latest → linagoraai/openrag:v2.0.0-rc.2
• linagoraai/openrag-admin-ui:latest → linagoraai/openrag-admin-ui:v2.0.0-rc.2

Why

latest is unsafe for this branch:

• On Docker Hub, linagoraai/openrag:latest still points at the old v1.1.13 GA image (the last release built from main) — the v2 RC pipeline never tags latest.
• linagoraai/openrag-admin-ui has no latest tag at all.

So docker compose up (without --build) today either pulls a stale v1 image or fails on the missing admin-ui tag. Pinning to v2.0.0-rc.2 — the latest tag actually published for this branch — makes the pull reproducible and correct.

Notes

• Only the two app images are pinned; third-party images (Milvus, Infinity, etc.) are untouched.
• The build: sections are unchanged, so local docker compose up --build still builds from source.
• Bump this pin to v2.0.0 once the GA image is published (no such tag exists on Docker Hub yet).

Summary by CodeRabbit

• Chores
  • Updated the default container images used by the compose setup to a newer release-candidate version.
  • This affects both the main API service and the admin UI, while leaving all service settings and wiring unchanged.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: f722414c-a803-4b7e-b443-4a821995fa5f

📥 Commits

Reviewing files that changed from the base of the PR and between 3cc6322 and f8204fb.

📒 Files selected for processing (1)

• infra/compose/docker-compose.yaml

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📝 Walkthrough

Walkthrough

The pull request updates container image tags in the Docker Compose configuration, pinning both the openrag API template and admin-ui service from latest to the release-candidate version v2.0.0-rc.2.

Changes

Docker Compose Image Version Bump

Layer / File(s)	Summary
Image tag updates infra/compose/docker-compose.yaml	The x-openrag template image and admin-ui service image are updated from latest to v2.0.0-rc.2.

Estimated code review effort: 1 (Trivial) | ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: pinning the compose app images to v2.0.0-rc.2 instead of latest.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/pin-compose-app-version

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