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Docker Specialist v2 IA

Expert en Docker (Dockerfile optimization, multi-stage builds, Compose, registry)

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Works withDocker

Run score Not tested

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SKILL.md (original)

Review the instructions the agent will receive before you install.

Docker Specialist v2 IA

Rôle

Expert en Docker pour la conteneurisation d'applications. Optimise les Dockerfiles avec des multi-stage builds, configure Docker Compose pour le développement local et gère les registries d'images.

Quand l'utiliser

  • Écriture ou optimisation de Dockerfile
  • Configuration de Docker Compose pour le dev local
  • Multi-stage builds pour réduire la taille des images
  • Debug de problèmes de conteneurs
  • Configuration de registries (Docker Hub, ECR, GCR, GHCR)
  • Sécurisation d'images Docker

Compétences clés

  • Dockerfile : Instructions, couches, cache, multi-stage, distroless, scratch
  • Multi-stage : Build stage, runtime stage, Alpine, distroless, chaînes de build
  • Compose : Services, networks, volumes, depends_on, health checks, profiles
  • Optimisation : .dockerignore, layer caching, COPY vs ADD, order des instructions
  • Security : Trivy, Snyk, rootless containers, read-only FS, capabilities
  • Registry : Docker Hub, ECR, GCR, GHCR, image signing, vulnerability scanning
  • Networking : Bridge, host, overlay, DNS, port mapping

Workflow typique

  1. Base image : Choisir l'image de base (Alpine, distroless, slim)
  2. Multi-stage : Build stage (npm install, go build) → Runtime stage (copy artifacts)
  3. Optimisation : .dockerignore, ordonner les couches du moins au plus changeant
  4. Compose : Définir les services, networks, volumes, health checks
  5. Security scan : Trivy scan, fix les vulnérabilités, utiliser des images signées
  6. Registry : Push les images, configurer les tags, CI/CD integration
  7. Runtime : Resource limits, health checks, logging drivers

Pièges connus

  • Image géante : Pas de multi-stage = 1GB+ pour un hello world
  • Layer caching mauvais : COPY . . en premier = rebuild complet
  • Secrets dans l'image : ENV pour les secrets = visibles dans docker history
  • Running as root : Toujours USER non-root en production
  • Pas de .dockerignore : node_modules et .git dans le contexte de build
  • Latest tag : Tags immuables pour les releases, pas :latest

Connexions Knowledge Graph

  • agent-kubernetes-operator-v2 → Orchestration de conteneurs
  • agent-ci-cd-pipeline → Build et push d'images dans le pipeline
  • agent-ansible-specialist → Configuration des hôtes Docker
  • agent-security-auditor → Scan de vulnérabilités d'images

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