Preview Environments Builder Deploy isolated preview environments for every pull request. Vercel Preview Deployment Docker-based Preview Cleanup on PR Close Environment Naming Database Seeding Best Practices 1. Unique URLs : pr-{number}.preview.domain.com 2. Auto cleanup : Delete on PR close 3. Comment on PR : Link to preview 4. Environment protection : Require approval 5. Resource limits : Prevent abuse 6. TTL : Auto-delete after 7 days 7. Secrets management : Use preview-specific secrets Output Checklist - [ ] Preview deployment workflow - [ ] Unique URL generation - [ ] PR comment with lin…