Agent skill

container-registry-management

Manage container registries (Docker Hub, ECR, GCR) with image scanning, retention policies, and access control.

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Install this agent skill to your Project

npx add-skill https://github.com/aj-geddes/useful-ai-prompts/tree/main/skills/container-registry-management

SKILL.md

Container Registry Management

Table of Contents

Overview

Implement comprehensive container registry management including image scanning, vulnerability detection, retention policies, access control, and multi-region replication.

When to Use

  • Container image storage and distribution
  • Security scanning and compliance
  • Image retention and cleanup
  • Registry access control
  • Multi-region deployments
  • Image signing and verification
  • Cost optimization

Quick Start

Minimal working example:

yaml
# ecr-setup.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: ecr-management
  namespace: operations
data:
  setup-ecr.sh: |
    #!/bin/bash
    set -euo pipefail

    REGISTRY_NAME="myapp"
    REGION="us-east-1"
    ACCOUNT_ID="123456789012"

    echo "Setting up ECR repository..."

    # Create ECR repository
    aws ecr create-repository \
      --repository-name "$REGISTRY_NAME" \
      --region "$REGION" \
      --encryption-configuration encryptionType=KMS,kmsKey=arn:aws:kms:$REGION:$ACCOUNT_ID:key/12345678-1234-1234-1234-123456789012 \
      --image-tag-mutability IMMUTABLE \
      --image-scanning-configuration scanOnPush=true || true

// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

Guide Contents
AWS ECR Setup and Management AWS ECR Setup and Management
Container Image Build and Push Container Image Build and Push
Image Signing with Notary Image Signing with Notary
Registry Access Control Registry Access Control
Registry Monitoring Registry Monitoring

Best Practices

✅ DO

  • Scan images before deployment
  • Use image tag immutability
  • Implement retention policies
  • Control registry access with IAM
  • Sign images for verification
  • Replicate across regions
  • Monitor registry storage
  • Use private registries

❌ DON'T

  • Push to public registries
  • Use latest tag in production
  • Allow anonymous pulls
  • Store secrets in images
  • Keep old images indefinitely
  • Push without scanning
  • Use default credentials
  • Share registry credentials

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