Exempt pinned decluttarr from Watchtower auto-updates

[joshdev8]

Summary

Adds the `com.centurylinklabs.watchtower.enable=false` label to the `decluttarr` service so Watchtower won't try to update it.

Why

`decluttarr` is pinned to `v1.50.2` (see PR #38) because v2 (Nov 2025) replaced `RADARR_URL`/`RADARR_KEY`/`SONARR_URL`/`SONARR_KEY`/`REMOVE_TIMER`/`REMOVE_FAILED` with structured `RADARR`/`SONARR` blocks that mandate `api_key` — which breaks the blank-keys-on-first-boot workflow this service is configured around.

For an immutable tag like `v1.50.2`, Watchtower today won't actually do anything (it pulls by digest and `v1.50.2`'s digest is stable). The label is documentation of intent — a guard that survives a future re-tag, or someone changing this service to `:latest` without realising why the pin existed.

Test plan

• `docker compose config` validates and renders `com.centurylinklabs.watchtower.enable: "false"` on the decluttarr service
• Bring the stack up and confirm Watchtower's logs show decluttarr as skipped on its next scan

Summary by CodeRabbit

• Chores
  • Updated service configuration to prevent automatic updates to the application container.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 04f3c377-a37f-4df5-b539-48d3173c0c2b

📥 Commits

Reviewing files that changed from the base of the PR and between fe365ba and 14dff61.

📒 Files selected for processing (1)

• docker-compose.yml

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📝 Walkthrough

Walkthrough

This PR adds a Watchtower exclusion label to the decluttarr service in the Docker Compose configuration, preventing automatic container updates and respecting the pinned image version.

Changes

Watchtower Configuration

Layer / File(s)	Summary
Decluttarr Watchtower exclusion label docker-compose.yml	Decluttarr service gains a labels block with com.centurylinklabs.watchtower.enable=false, preventing Watchtower from updating this pinned container.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

A rabbit's tale of pinned containers bright,
Where Watchtower pauses, respects what's right,
One label whispers, "do not update me,"
Decluttarr stays safe and stable as can be! 🐰✨

🚥 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 pull request title accurately and clearly describes the main change: adding a Watchtower exemption label to the pinned decluttarr service in docker-compose.yml.
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.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/decluttarr-watchtower-exempt

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