Containerized E2E Testing: Eliminating 'Works On My Machine' with Docker

This guide addresses a critical pain point in E2E testing—environment consistency between local development and CI/CD pipelines. By providing production-ready Docker and docker-compose configurations for Cypress and Playwright, along with YoBox integration for ephemeral test infrastructure, teams can eliminate debugging sessions caused by environmental mismatches. The approach enables fast, shardable, and reproducible test runs that maintain parity across machines.