docs: update deployment guide with GitHub Container Registry images

- Added instructions for using pre-built images from ghcr.io
- Created docker-compose.production.yml for quick deployment with official images
- Updated deployment guide with two methods:
  1. Using pre-built images (fastest, recommended)
  2. Building from source (for customization)
- Updated SIMPLE_SETUP references to use new unified script
- Added specific version deployment instructions
- Maintained backward compatibility with local build process

The pre-built images eliminate build time and ensure consistent deployments
across environments. Users can now deploy PicPeak in minutes using:
- ghcr.io/the-luap/picpeak/backend:latest
- ghcr.io/the-luap/picpeak/frontend:latest

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

docker-compose.production.yml

@@ -0,0 +1,113 @@
+version: '3.8'
+
+services:
+  postgres:
+    image: postgres:15-alpine
+    container_name: picpeak-postgres
+    environment:
+      POSTGRES_USER: ${DB_USER:-picpeak}
+      POSTGRES_PASSWORD: ${DB_PASSWORD}
+      POSTGRES_DB: ${DB_NAME:-picpeak}
+    volumes:
+      - postgres-data:/var/lib/postgresql/data
+    networks:
+      - picpeak-network
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${DB_USER:-picpeak}"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  redis:
+    image: redis:7-alpine
+    container_name: picpeak-redis
+    command: redis-server --requirepass ${REDIS_PASSWORD}
+    volumes:
+      - redis-data:/data
+    networks:
+      - picpeak-network
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "redis-cli", "--raw", "incr", "ping"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  backend:
+    # Use pre-built image from GitHub Container Registry
+    image: ghcr.io/the-luap/picpeak/backend:latest
+    container_name: picpeak-backend
+    env_file: .env
+    environment:
+      - NODE_ENV=production
+      - DB_HOST=postgres
+      - REDIS_HOST=redis
+      - PHOTOS_DIR=/app/storage/events
+    volumes:
+      - ./storage:/app/storage
+      - ./logs:/app/logs
+      - ./data:/app/data
+    ports:
+      - "${BACKEND_PORT:-3001}:3000"
+    networks:
+      - picpeak-network
+    depends_on:
+      postgres:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:3000/api/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+
+  frontend:
+    # Use pre-built image from GitHub Container Registry
+    image: ghcr.io/the-luap/picpeak/frontend:latest
+    container_name: picpeak-frontend
+    environment:
+      - VITE_API_URL=${FRONTEND_API_URL:-http://localhost:3001}
+    ports:
+      - "${FRONTEND_PORT:-3000}:80"
+    networks:
+      - picpeak-network
+    depends_on:
+      - backend
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+
+  # Optional: Nginx reverse proxy for production with SSL
+  # Uncomment and configure if you want built-in HTTPS support
+  # nginx:
+  #   image: nginx:alpine
+  #   container_name: picpeak-nginx
+  #   ports:
+  #     - "80:80"
+  #     - "443:443"
+  #   volumes:
+  #     - ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
+  #     - ./nginx/ssl:/etc/nginx/ssl:ro
+  #     - ./nginx/conf.d:/etc/nginx/conf.d:ro
+  #   networks:
+  #     - picpeak-network
+  #   depends_on:
+  #     - frontend
+  #     - backend
+  #   restart: unless-stopped
+
+volumes:
+  postgres-data:
+    driver: local
+  redis-data:
+    driver: local
+
+networks:
+  picpeak-network:
+    driver: bridge