Fiber v3 Services + Testcontainers: Next-Gen Local Dev in Go

Fiber v3 introduces a new Services API that integrates with Testcontainers to manage backing services like databases directly within your application lifecycle. This approach eliminates the need for external orchestration scripts and provides a clean, reproducible local development environment. The tutorial demonstrates building a Go application that automatically starts a PostgreSQL container using the new Services abstraction, with hot-reloading support via air and container reuse for faster development loops.