The ENV variables defined in the Keycloack example has been changed

Bug Report

The Enviroment variables that connects the Keycloak instance to the Postgres instance has been changed, the variable that have changed are; KC_DB_HOST --> KC_DB_URL KC_DB_USER --> KC_DB_USERNAME

The new variables are defined here https://www.keycloak.org/server/containers

Please adjust the variables in https://raw.githubusercontent.com/suitenumerique/docs/refs/heads/main/env.d/production.dist/kc_postgresql

When running the instance without the new variables, the keycloak instance connects to localhost:5432 by default. Which causes the keykloak container to fail (because it doesn't point to the correct service obviously)