how to persist postgresql database across restarts

[leo925]

Hi
I am deploying hasura image on Azure within a Linux Docker container., I wanted to persist postgresql database across restarts.
I have set WEBSITES_ENABLE_APP_SERVICE_STORAGE to true, also update volumes part as below.
but it is not working.
please could anyone help me.

version: "3.6"
services:
postgres:
image: postgres:15
restart: always
volumes:
- ${WEBAPP_STORAGE_HOME}/newfile:/var/lib/postgresql/data
environment:
POSTGRES_PASSWORD: xxxxxxxxxxxx
................//graphql engine and data connector agent
volumes:
db_data: