The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.

Container-Based Projects

Auto-activate when: Working with Dockerfile, docker-compose.yml, docker-compose.yaml, .dockerignore, Kubernetes manifests (*.yaml, *.yml in k8s directories), container registries, or when user mentions Docker, containers, orchestration, or deployment workflows.

Guidelines for containerized applications using Docker, Docker Compose, and orchestration tools.

Out of Scope

• Infrastructure orchestration - see ansible-workflow
• Kubernetes patterns - separate skill

CRITICAL: Docker Compose V2 Syntax

MUST NOT use version: field (deprecated) or docker-compose with hyphen: