Copy built album-embed assets into Docker images

[cdzombak]

The album/stream embed widget is built to public/embed/ (which is .gitignored) but only public/build/ was copied from the node build stage. This caused embedded albums to be broken in Lychee 7.x.

Summary by CodeRabbit

• Chores
  • Updated Docker image configurations to include embedding assets in production builds. Assets from public/embed are now available at runtime alongside existing public build assets, improving asset delivery capabilities.

[coderabbitai]

📝 Walkthrough

Walkthrough

Both Dockerfile and Dockerfile-legacy are updated to copy the public/embed directory from the build stage to the final production image. This makes embedded assets available alongside existing public build assets during container runtime.

Changes

Cohort / File(s)	Summary
Docker Build Configuration Dockerfile, Dockerfile-legacy	Added COPY instruction to include public/embed assets from the node build stage into the final production image.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A rabbit hops through layers so neat,
Embedding assets, what a treat!
From node stage to prod, they fly,
Public/embed reaches the sky! 🚀

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Merge Conflict Detection	✅ Passed	✅ No merge conflicts detected when merging into master

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

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[cdzombak]

FWIW, this commit is currently built & deployed to https://pictures.dzombak.com; a working embedded album is visible at https://www.dzombak.com/blog/2026/02/birds-of-sanibel-island/ .