This change pre-downloads all build dependencies (Zig, WebKit, BoringSSL,
etc.) into the CI build images, significantly reducing build startup time
by avoiding repeated downloads.
Changes:
- Add scripts/bake-dependencies.sh to clone Bun and run cmake configure
to download all dependencies during image creation
- Update bootstrap.sh to call bake-dependencies.sh when in CI mode
- Add buildkite checkout hook to use git fetch instead of full clone
when the repository already exists (preserves build/ and vendor/zig/)
- Add buildkite pre-command hook to remove node_modules before each
build, ensuring clean dependency installation
- Update Dockerfile with the same hooks and pre-baked dependencies
During CI builds:
1. git fetch origin <commit> (instead of full clone)
2. git checkout <commit>
3. rm -rf node_modules && bun install
4. Build uses pre-downloaded dependencies from build/ and vendor/
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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