Use host Redis and PostgreSQL instead of containerized

Server already has Redis and PostgreSQL running. Worker uses
network_mode: host to connect directly, no port conflicts.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-compose.prod.yml

@@ -1,26 +1,22 @@
-# Production Docker Compose — worker + Redis + PostgreSQL only
-# Apache on host serves PHP + frontend files natively
-# Redis/PostgreSQL ports exposed to localhost for api.php access
+# Production Docker Compose — worker only
+# Uses host Redis + PostgreSQL (already running on server)
+# Apache/Nginx on host serves PHP + frontend files natively
 
 services:
   worker:
     build:
       context: .
       dockerfile: Dockerfile.worker
+    network_mode: host
     volumes:
       - ${WEB_DIR:-/var/www/html/pdf-accessibility}/uploads:/app/uploads
       - ${WEB_DIR:-/var/www/html/pdf-accessibility}/results:/app/results
       - ./logs:/app/logs
-    depends_on:
-      redis:
-        condition: service_healthy
-      postgres:
-        condition: service_healthy
     environment:
-      - REDIS_HOST=redis
-      - REDIS_PORT=6379
-      - DB_HOST=postgres
-      - DB_PORT=5432
+      - REDIS_HOST=${REDIS_HOST:-127.0.0.1}
+      - REDIS_PORT=${REDIS_PORT:-6379}
+      - DB_HOST=${DB_HOST:-127.0.0.1}
+      - DB_PORT=${DB_PORT:-5432}
       - DB_NAME=${DB_NAME:-pdf_checker}
       - DB_USER=${DB_USER:-pdf_checker}
       - DB_PASSWORD=${DB_PASSWORD:-dev_password}
@@ -29,38 +25,3 @@ services:
     deploy:
       replicas: ${WORKER_COUNT:-2}
     restart: unless-stopped
-
-  redis:
-    image: redis:7-alpine
-    ports:
-      - "127.0.0.1:${REDIS_PORT:-6380}:6379"
-    volumes:
-      - redis-data:/data
-    healthcheck:
-      test: ["CMD", "redis-cli", "ping"]
-      interval: 10s
-      timeout: 3s
-      retries: 3
-    restart: unless-stopped
-
-  postgres:
-    image: postgres:16-alpine
-    ports:
-      - "127.0.0.1:${DB_PORT:-5433}:5432"
-    volumes:
-      - pg-data:/var/lib/postgresql/data
-      - ./db/init.sql:/docker-entrypoint-initdb.d/init.sql
-    environment:
-      POSTGRES_DB: ${DB_NAME:-pdf_checker}
-      POSTGRES_USER: ${DB_USER:-pdf_checker}
-      POSTGRES_PASSWORD: ${DB_PASSWORD:-dev_password}
-    healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U ${DB_USER:-pdf_checker}"]
-      interval: 10s
-      timeout: 3s
-      retries: 3
-    restart: unless-stopped
-
-volumes:
-  redis-data:
-  pg-data: