Refactor portainer.yml: update ansible_password comments for clarity and add optional SSH and sudo passwords; add sanity check playbook for SSH and sudo verification.

nextcloud/collections/miniplay

@@ -0,0 +1,23 @@
+---
+- name: Sanity check SSH + sudo on portainer
+  hosts: nextcloud_host
+  gather_facts: false
+
+  tasks:
+    - name: Who am I as SSH user?
+      ansible.builtin.command: whoami
+      changed_when: false
+      register: who
+
+    - ansible.builtin.debug:
+        msg: "SSH user is: {{ who.stdout }}"
+
+    - name: Who am I with sudo?
+      become: true
+      become_method: sudo
+      ansible.builtin.command: whoami
+      changed_when: false
+      register: who_root
+
+    - ansible.builtin.debug:
+        msg: "Become user is: {{ who_root.stdout }}"