Add missing mount

services.mail.yml

@@ -121,6 +121,7 @@ noise:
       port: 6897
       volumes:
         - /etc/mailman-noise: /config
+        - /etc/sso/public.key: /etc/sso/public.key
         - /var/lib/mailman-noise: /data
       env:
         DOMAIN: "{{ domain }}"