- fix NameError: filepath undefined in trigger_airflow call (use filepath_stored)
- add extra_hosts ai.sriphat.com:192.168.100.8 for container DNS resolution
(required for KEYCLOAK_SERVER_URL=http://ai.sriphat.com/keycloak/ to work
inside Docker — host nginx on .8:80 routes /keycloak/ to Keycloak container)