fix: add external network configuration for condado-newsletter service in Docker Compose

docker-compose.prod.yml

@@ -23,6 +23,8 @@ services:
     depends_on:
       condado-newsletter-postgres:
         condition: service_healthy
+    networks:
+      - external
     environment:
       SPRING_PROFILES_ACTIVE: prod
       SPRING_JPA_HIBERNATE_DDL_AUTO: ${SPRING_JPA_HIBERNATE_DDL_AUTO:-update}
@@ -62,5 +64,8 @@ volumes:
 
 networks:
   default:
+    driver: bridge
+  
+  external:
     name: traefik
     external: true