Critical bug fix (P0): Tailwind CSS classes were not being compiled.
Root Cause:
- Tailwind v4 requires explicit @import tailwindcss in CSS file
- File was missing this directive, causing all utility classes to be ignored
- CSS bundle was only 4KB instead of expected 30KB+
Fix:
- Added @import tailwindcss; at the top of src/index.css
- Verified build now generates 30KB+ CSS bundle with all utility classes
- Confirmed classes like text-3xl, bg-indigo-600, max-w-7xl are present
Safety First:
- Build passes successfully
- No breaking changes to existing styles
- Incremental fix before UI refactoring
Refs: Tailwind v4 migration guide
Create containerized development setup for safe and consistent frontend development:
Docker Configuration:
- docker-compose.yml: Root-level orchestration with frontend service
- frontend/Dockerfile.dev: Node.js 20 Alpine optimized for dev
- Volume mounts for Hot Module Replacement (HMR)
- Named volume for node_modules to avoid conflicts
- Health check to verify service availability
- Environment variables for file watching (CHOKIDAR_USEPOLLING)
Vite Configuration Update:
- vite.config.ts: Add server config for Docker compatibility
- host: '0.0.0.0' to accept external connections
- usePolling: true for file watching in container
- port: 5173 explicitly configured
Documentation:
- README.md: Add Docker development procedure section
- Document docker compose up -d workflow
- Explain HMR and hot-reload capabilities
- List advantages of Docker-based development
Usage:
docker compose up -d # Start development server
docker compose logs -f # View logs
docker compose down # Stop container
Access: http://localhost:5173
Safety First:
- Isolated environment prevents system conflicts
- Reproducible setup across different machines
- No host Node.js installation required
- Easy team onboarding
Refs: Docker best practices for Node.js development
