Update the promtail user creation task

roles/promtail/defaults/main.yml

@@ -1,6 +1,6 @@
 ---
 promtail_version: 2.7.3
-promtail_positions_path: /home/promtail/positions.yaml
+promtail_positions_path: /var/lib/promtail/positions.yaml
 promtail_http_port: 9080
 promtail_loki_server: localhost
 promtail_loki_port: 3100

roles/promtail/tasks/main.yml

@@ -17,9 +17,11 @@
   ansible.builtin.user:
     name: promtail
     groups:
+      - adm
       - promtail
       - systemd-journal
-      - adm
+    shell: /bin/false
+    home: /var/lib/promtail
     state: present
     system: true