Keycloak: Update postgres

coreos-config/plays/services/keycloak/docker-compose.yaml

@@ -3,20 +3,18 @@ version: '3.9'
 
 services:
   postgres:
-    image: postgres:14
+    image: postgres:15
     restart: always
     environment:
       - "POSTGRES_DB={{ auth.db.name }}"
       - "POSTGRES_USER={{ auth.db.user }}"
       - "POSTGRES_PASSWORD={{ auth.db.password }}"
-    labels:
-      - "com.centurylinklabs.watchtower.scope=update"
     volumes:
       - pg_data:/var/lib/postgresql/data
     networks:
       - backend
     healthcheck:
-      test: ["CMD-SHELL", "pg_isready"]
+      test: ["CMD-SHELL", "pg_isready", "-U", "keycloak"]
       interval: 10s
       timeout: 5s
       retries: 5