use domain instead of matrix.domain for matrix IDs using well-known

roles/matrix/tasks/synapse.yml

 - name: Start new Synapse instance
   service: name=matrix-synapse state=started
 
+- name: Create matrix well-known directory
+  file: state=directory path=/var/www/well-known/matrix owner=www-data group=www-data
+
+- name: Add redirect to well-known
+  template:
+    src=var_www_well-known_matrix_server.j2
+    dest=/var/www/well-known/matrix/server
+    owner=www-data
+    group=www-data
+
 - name: Create the Apache Matrix sites config files
   template:
     src=etc_apache2_sites-available_matrix.j2

roles/matrix/templates/etc_matrix-synapse_conf.d_server_name.j2

 # e.g. matrix.org, localhost:8080, etc.
 # This is also the last part of your UserID.
 #
-server_name: "{{ matrix_domain }}"
+server_name: "{{ domain }}"

roles/matrix/templates/etc_matrix-synapse_homeserver.j2

       - '::'
     
     resources:
-      - names: [client, federation]
+      - names: [client, federation, webclient]
 
   # Unsecure HTTP listener: for when matrix traffic passes through a reverse proxy
   # that unwraps TLS.
     x_forwarded: true
 
     resources:
-      - names: [client, federation]
+      - names: [client, federation, webclient]
         compress: false
 
     # example additonal_resources:

roles/matrix/templates/root_riot_config.j2

 {
-    "default_hs_url": "https://{{ matrix_domain }}",
+    "default_hs_url": "https://{{ domain }}",
     "default_is_url": "https://matrix.org",
     "disable_custom_urls": false,
     "disable_guests": false,

roles/matrix/templates/var_www_well-known_matrix_server.j2

+{
+    "m.server": "{{ matrix_domain }}:8448"
+}