Added environment variable to fix Postgres install

docker-compose.yml

@@ -56,6 +56,8 @@ services:
 
   zammad-postgresql:
     image: ${IMAGE_REPO}:zammad-postgresql${VERSION}
+    environment:
+      - POSTGRES_HOST_AUTH_METHOD=trust
     restart: ${RESTART}
     volumes:
       - postgresql-data:/var/lib/postgresql/data