ci: Lowercase IMAGE_NAME for OCI registry

[cgwalters]

github.repository preserves the org casing (e.g. LobsterTrap/...) but OCI registry references require lowercase. Use bash parameter expansion to lowercase GITHUB_REPOSITORY at the start of each job.

Assisted-by: OpenCode (Claude Opus 4)

Summary by CodeRabbit

• Chores
  • Updated container image naming convention in the build workflow to ensure consistent formatting across deployment processes.

[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: f296e5eb-a440-4a7f-a800-2ac13a67fbe9

📥 Commits

Reviewing files that changed from the base of the PR and between dfe93ea and f410bf3.

📒 Files selected for processing (1)

• .github/workflows/build-container.yml

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📝 Walkthrough

Walkthrough

Removed the top-level IMAGE_NAME environment variable assignment and instead compute it per job by lowercasing GITHUB_REPOSITORY using bash parameter expansion (${GITHUB_REPOSITORY,,}), persisting the value to the job environment for use in downstream steps.

Changes

Cohort / File(s)	Summary
GitHub Actions Workflow Configuration .github/workflows/build-container.yml	Moved IMAGE_NAME variable computation from global env to individual job steps, applying lowercase transformation via ${GITHUB_REPOSITORY,,} in build-and-test, push, and manifest jobs to ensure Docker image names comply with lowercase naming requirements.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~4 minutes

Poem

🐰 In workflows where names run wild and free,
We lowercase repos for Docker's decree,
From uppercase chaos to lowercase cheer,
${GITHUB_REPOSITORY,,} keeps registries clear!
Hop, hop, the container builds right! 🐇

🚥 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 describes the main change: lowercasing IMAGE_NAME for OCI registry compatibility.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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