multi-container-workspaces

Use when setting up dev containers with sidecar services like databases, caches, or message brokers. Covers Docker Compose integration, service networking, and multi-service devcontainer.json configuration. USE FOR: Docker Compose sidecar services, database/cache/queue containers alongside dev containers, multi-service networking, service health checks DO NOT USE FOR: general devcontainer.json schema (use devcontainer), Docker-in-Docker for building images (use docker-in-docker), production Kubernetes deployment (use iac/kubernetes)