feat: waitress port from services option

templates/waitress-systemd-unit.j2

@@ -1,5 +1,15 @@
+{% if item.get("port") %}
+{% set port = item.port %}
+{% else %}
+{% set port = services[item.name].port %}
+{% endif %}
+
+{% if item.get("oidc") %}
+{% set port = port + 1000 %}
+{% endif %}
+
 [Unit]
-Description={{ item.name }} on {{ item.port }} at {{ item.path }}
+Description={{ item.name }} on {{ port }} at {{ item.path }}
 After=network.target
 
 [Service]
@@ -8,7 +18,7 @@ WorkingDirectory={{ item.path }}
 Type=simple
 User=www-data
 
-ExecStart=/usr/bin/waitress-serve --host 0.0.0.0 --port {{ item.port }} --call 'app:createApp'
+ExecStart=/usr/bin/waitress-serve --host 0.0.0.0 --port {{ port }} --call 'app:createApp'
 
 [Install]
 WantedBy=multi-user.target