Docker build cache

[RagingTiger]

Consider using build cache when building images to lesson build time. Can use previous Docker images as a cache (might be best strategy).

References:

• https://docs.docker.com/build/ci/github-actions/cache/
• https://evilmartians.com/chronicles/build-images-on-github-actions-with-docker-layer-caching
• https://depot.dev/blog/docker-layer-caching-in-github-actions
• https://www.kenmuse.com/blog/using-the-docker-cache/
• https://lipanski.com/posts/speed-up-your-docker-builds-with-cache-from

[RagingTiger]

Already implemented in GitHub Docker publish action:

• https://github.com/RagingTiger/Omega-Notebook/blob/c84a294c980f7d29f2dcfdaa958638da91a8fa1e/.github/workflows/docker-publish-cpu.yml#L79-L80
• https://github.com/RagingTiger/Omega-Notebook/blob/c84a294c980f7d29f2dcfdaa958638da91a8fa1e/.github/workflows/docker-publish-gpu.yml#L79-L80

[RagingTiger]

Implemented with: 6902c9797ec624370e2e67912d299b519b073724 and 50994c27c59d42be1e142dcbe1398d3bf0279615