optimize-docker-layers
Docker Layer Optimization
Analyzes Dockerfiles and provides optimization recommendations for faster CI builds.
Layer Caching Principles
┌─────────────────────────────────────────────────────────────────┐
│ DOCKER LAYER CACHE │
├─────────────────────────────────────────────────────────────────┤
│ │
│ Layer 1: FROM php:8.4-alpine ✓ Cached (base image) │
│ ↓ │
│ Layer 2: RUN apk add ... ✓ Cached (system deps) │
│ ↓ │
│ Layer 3: COPY composer.json ... ✓ Cached (if unchanged) │
│ ↓ │
│ Layer 4: RUN composer install ✓ Cached (if lock same) │
│ ↓ │
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