docker

Use when containerizing applications with Docker — Dockerfiles, multi-stage builds, docker-compose, or container deployment. Also use when debugging container issues, optimizing image sizes, or setting up local development with Docker.

Model	Source
sonnet	pack: deploy

Full Reference

┏━ 🚀 docker ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ ┃ Use when containerizing applications with Dock… ┃ ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛

Docker

Docker Engine v29.2.1 (February 2026). Docker Compose v2 is the standard — docker compose (space, no hyphen). The version: field in compose.yaml is obsolete — remove it. BuildKit is enabled by default since Engine v23.

Quick Reference

Item	Value
Engine	v29.2.1
Compose	v2 (docker compose, not docker-compose)
Docs	https://docs.docker.com
Init	docker init — auto-generates Dockerfile + compose.yaml
Scout	docker scout cves <image> — vulnerability scanning
Desktop license	Free: less than 250 employees AND less than $10M revenue

Reference Index

I want to…	File
Write a Dockerfile or build multi-stage images for Node.js, Next.js, Go, or Python	reference/dockerfile.md
Configure Docker Compose, set up depends_on, use Compose Watch, or build production stacks	reference/compose.md
Optimize layer caching, write .dockerignore, use build/runtime secrets, or scan with Scout	reference/optimization-secrets.md

Usage: Read the reference file matching your current task from the index above. Each file is self-contained with code examples and inline gotchas.