webserver: add unix proxy to proxy location

webserver/templates/locations/proxy.conf

@@ -21,6 +21,9 @@
         {% elif server.port is defined %}
 
         proxy_pass http://127.0.0.1:{{server.port}}{% if not location.proxy_relative|default(false) %}/{% endif %};
+        {% elif location.proxy_unix is defined %}
+
+        proxy_pass http://unix:{{location.proxy_unix}};
         {% else %}
 
         proxy_pass http://unix:{{server.socket}};