Fix: Pridaná coolify sieť pre Traefik routing

- Pridaná coolify sieť do postgres a backend služieb
- Deklarovaná coolify ako external network
- Umožní Traefik-u routovať požiadavky na backend
- Opravuje "no available server" chybu

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

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

docker-compose.yml

@@ -18,6 +18,7 @@ services:
     #   - "5432:5432"  # Commented for Coolify - not needed with Traefik
     networks:
       - ebook_network
+      - coolify
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-ebook_user} -d ${POSTGRES_DB:-ebook_prod}"]
       interval: 10s
@@ -67,19 +68,14 @@ services:
     labels:
       - "coolify.managed=true"
       - "coolify.type=application"
-      # Traefik labels for routing
-      - "traefik.enable=true"
-      - "traefik.http.routers.backend.rule=Host(`prince2-ebook.apps.inbox.sk`)"
-      - "traefik.http.routers.backend.entrypoints=websecure"
-      - "traefik.http.routers.backend.tls=true"
-      - "traefik.http.routers.backend.tls.certresolver=letsencrypt"
-      - "traefik.http.services.backend.loadbalancer.server.port=8000"
+      # Coolify automatically adds Traefik labels based on domain config
     volumes:
       # Pre persistenciu logov a translation súborov
       - backend_logs:/app/admin-backend/logs
       - translation_files:/app/admin-backend/translationfile
     networks:
       - ebook_network
+      - coolify
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:8000/health"]
       interval: 30s
@@ -107,6 +103,9 @@ networks:
   ebook_network:
     driver: bridge
     name: ebook_network
+  coolify:
+    external: true
+    name: coolify
 
 volumes:
   postgres_data: