fix: harden production docker build context

[erskingardner]

Summary

• Exclude local deployment backups and Caddy scratch files from the Docker build context.
• Create and chown /home/goggles for the non-root runtime user so Gunicorn can create its control socket without permission errors.

Verification

• Deployed equivalent changes on goggles.ipf.dev during the audit-redesign rollout.
• Rebuilt goggles-web successfully with a small build context.
• Verified /healthz/, login, and static assets returned 200 after restart.

Sensitive paths

None. This only touches .dockerignore and Dockerfile.

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Summary by CodeRabbit

• Chores
  • Tightened container build setup by excluding additional local deployment and configuration artifacts from the build context.
  • Improved container user setup by creating and assigning ownership of the runtime home directory, helping ensure smoother startup and permission handling.

[stage-review]

Ready to review this PR? Stage has broken it down into 2 individual chapters for you:

	Title
1	Exclude deployment artifacts from Docker context
2	Configure home directory for non-root user

_{Chapters generated by Stage for commit 20d1ad2 on Jun 29, 2026 1:28pm UTC.}

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: a6247ed4-abbe-43ff-9e60-36e2b2262264

📥 Commits

Reviewing files that changed from the base of the PR and between 951c990 and 20d1ad2.

📒 Files selected for processing (2)

• .dockerignore
• Dockerfile

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Walkthrough

Adds three entries to .dockerignore to exclude local deployment backups and Caddy goggles configs from the build context. Updates the Dockerfile RUN command to also create /home/goggles and set its ownership to goggles:goggles.

Changes

Docker Configuration

Layer / File(s)	Summary
Build context exclusions and user home directory .dockerignore, Dockerfile	Three paths (local-deploy-backups/, Caddyfile.with-goggles, caddy-with-goggles.json) are added to .dockerignore; the RUN command in Dockerfile now creates /home/goggles and assigns its ownership to goggles:goggles.

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: hardening the production Docker build context and runtime setup.
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 uma/docker-build-hardening

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