Move upstream logic to handler function

roles/whoami/tasks/main.yml

@@ -1,21 +1,13 @@
 ---
-# install whoami container
-- name: Ensure upstream directory exists
-  ansible.builtin.file:
-    path: "{{ whoami_upstream_file_dir }}"
-    state: directory
-    mode: '0755'
-  become: true
-  tags: 
-    - fs
-
-- name: Update upstream template
-  ansible.builtin.template:
-    src: upstream.json.j2
-    dest: "{{ whoami_upstream_file_dir }}/upstream.json"
-  become: true
-  tags: 
-    - fs
+## install whoami container
+- name: Check upstream status
+  community.docker.docker_container_exec:
+    container: "{{ caddy_container_id }}"
+    command: >
+      curl localhost:2019/id/{{ stack.name }}_upstream/
+  register: result
+  changed_when: (result.stdout | from_json) != (lookup('template', 'upstream.json.j2') | from_yaml)
+  become: yes
   notify: "update upstream"
 
 - name: Deploy whoami to swarm
@@ -30,3 +22,4 @@
   tags:
     - docker-swarm
   notify: "update upstream"
+