feat: add release workflow for tagged builds

[rophy]

Summary

• Add GitHub Actions workflow triggered on v* tags
• Builds release image via Dockerfile.release and pushes to ghcr.io/rophy/openlogreplicator:<tag>
• Uses GITHUB_TOKEN for GHCR auth (no extra secrets needed)

Test plan

• Merge PR, push v1.9.0.1 tag, verify workflow runs and image appears in GHCR

Summary by CodeRabbit

• Chores
  • Added automated container image building and publishing workflow for version releases.

[coderabbitai]

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 3e9401f8-7f08-43fe-8be7-ba8b6c3f5fbd

📥 Commits

Reviewing files that changed from the base of the PR and between e66847d and 3103896.

📒 Files selected for processing (1)

• .github/workflows/release.yaml

📝 Walkthrough

Walkthrough

A new GitHub Actions workflow is added that automatically builds and publishes a Docker container image to GitHub Container Registry whenever a version tag matching v* is pushed. The workflow configures Docker Buildx, authenticates to the registry, builds from Dockerfile.release with environment-specific build arguments, and pushes the resulting image.

Changes

Cohort / File(s)	Summary
Release Workflow Configuration .github/workflows/release.yaml	New GitHub Actions workflow that triggers on version tags (v*), sets up Docker Buildx, authenticates to GitHub Container Registry, and builds/pushes release container image with OLR_VERSION and feature flags (Oracle, Kafka, Protobuf, Prometheus) enabled.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A new workflow hops into place,
Docker images run at full pace,
Tags trigger the build with care,
Container releases float through the air! 📦✨

🚥 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 and accurately summarizes the main change: adding a GitHub Actions release workflow triggered on version tags.
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.

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

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/release-workflow

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In @.github/workflows/release.yaml:
- Around line 11-13: The workflow's job-level permissions only set packages:
write which can leave contents scoped to none and cause actions/checkout@v4 to
fail; update the permissions block in .github/workflows/release.yaml to include
contents: read alongside packages: write so the GITHUB_TOKEN has repository
contents read access required by actions/checkout@v4.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: cb2ff861-32c7-4f69-b54e-36aa9f1d7c2d

📥 Commits

Reviewing files that changed from the base of the PR and between 21955ba and e66847d.

📒 Files selected for processing (1)

• .github/workflows/release.yaml