Docker: agregar servicio Redis para sesiones PHP

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

docker-compose.yml

@@ -21,8 +21,7 @@ services:
       - DB_NAME=${DB_NAME}
       - DB_USER=${DB_USER}
       - DB_PASS=${DB_PASS}
-      # Redis gestionado por Coolify — configurar REDIS_HOST en env vars de Coolify
-      - REDIS_HOST=${REDIS_HOST:-127.0.0.1}
+      - REDIS_HOST=${REDIS_HOST:-redis}
       - REDIS_PORT=${REDIS_PORT:-6379}
       - REDIS_PASSWORD=${REDIS_PASSWORD:-}
       - WHATSAPP_TOKEN=${WHATSAPP_TOKEN}
@@ -72,8 +71,11 @@ services:
   #     start_period: 30s
   #   command: --default-authentication-plugin=mysql_native_password --max_connections=500
 
-  # Redis: gestionado como Database Resource en Coolify (externo)
-  # Worker: corre dentro del contenedor app vía Supervisor
+  redis:
+    image: redis:7-alpine
+    restart: unless-stopped
+    networks:
+      - coolify
 
 volumes:
   app-logs: