Rename domain group variable to server_domain

group_vars/testing.yml

@@ -8,3 +8,5 @@ caddy_tls_use_staging: yes
 
 whoami_use_https: no
 wallabag_use_https: no
+
+#server_domain: mytest.com

roles/whoami/tasks/main.yml

@@ -8,7 +8,7 @@
   register: result
   changed_when: (result.stdout | from_json) != (lookup('template', 'upstream.json.j2') | from_yaml)
   become: yes
-  notify: "update upstream"
+  notify: "update whoami upstream"
 
 - name: Deploy whoami to swarm
   community.general.docker_stack:
@@ -21,5 +21,5 @@
   become: yes
   tags:
     - docker-swarm
-  notify: "update upstream"
+  notify: "update whoami upstream"
 

roles/whoami/templates/upstream.json.j2

@@ -1,6 +1,6 @@
 {
     "@id": "{{ stack.name }}_upstream",
-{% if domain is not undefined and not none %}   
+{% if server_domain is not undefined and not none %}   
     "match": [
         {
             "host": [