roles/docker/defaults/main.yml

@@ -18,3 +18,6 @@ fider:
 
 matrix:
   domain: "matrix.{{ base_domain }}"
+
+riot:
+  domain: "riot.{{ base_domain }}"

roles/docker/tasks/services/matrix_riot.yml

@@ -57,4 +57,8 @@
     networks:
       - name: matrix
       - name: external_services
+    env:
+      VIRTUAL_HOST: "{{ riot.domain }}"
+      LETSENCRYPT_HOST: "{{ riot.domain }}"
+      LETSENCRYPT_EMAIL: "{{ letsencrypt_email }}"