Connect external custom action server with rasax

[Deprecated] Rasa X Community Edition
1

how can i connect external custom action server with rasax which deployed by docker-compose manually ？
the custom action server deployed separately from rasax and rasa.
Can someone help me?

2

set RASA_USER_APP=<my action server url(without /webhook)> in .env file and modify docker-compose.yml,

x-rasax-credentials: &rasax-credentials
  ...
  RASA_USER_APP: ${RASA_USER_APP:-http://app:5055}
  ...

endpoints.yml looks like

...
action_endpoint:
   url: ${RASA_USER_APP}/webhook
   token: ""