Update proxied nginx for maubot

roles/matrix-bot-maubot/tasks/init.yml

@@ -14,8 +14,9 @@
           {% if matrix_nginx_proxy_enabled | default(False) %}
             {# Use the embedded DNS resolver in Docker containers to discover the service #}
              resolver 127.0.0.11 valid=5s;
-             set $backend "matrix-bot-maubot:{{ matrix_bot_maubot_management_interface_port }}/$1";
+             set $backend "matrix-bot-maubot:{{ matrix_bot_maubot_management_interface_port }}$request_uri";
              proxy_pass http://$backend;
+             proxy_set_header Host $host;
              proxy_set_header Upgrade $http_upgrade;
              proxy_set_header Connection "upgrade";
           {% else %}