feat(keycloak|docker): improved templating

Signed-off-by: Tuan-Dat Tran <tuan-dat.tran@tudattr.dev>

group_vars/docker/keycloak.yml

@@ -1,7 +1,13 @@
 keycloak_admin_hash: "{{ vault.docker.keycloak.admin.hash }}"
 
+keycloak_realms: "{{ keycloak_config.realms }}"
+
 keycloak_config:
-  reals:
+  database:
+    db_name: keycloak
+    username: keycloak
+    password: "{{ vault.docker.keycloak.database.password }}"
+  realms:
     - realm: homelab
       display_name: "Homelab Realm"
       users:
@@ -42,6 +48,7 @@ keycloak_config:
         realm_roles:
           - offline_access
           - uma_authorization
+          - create-realm
           - admin
         client_roles:
           realm_management:
@@ -49,3 +56,6 @@ keycloak_config:
           account:
             - view-profile
             - manage-account
+      roles:
+        realm: []
+        default_roles: []