feat(landingpage): Automatically update

roles/landingpage/templates/docker-stack.yml.j2

@@ -12,6 +12,11 @@ services:
     entrypoint: sh -c "/docker-entrypoint.sh nginx -g 'daemon off;'"
     networks:
       - "{{ docker_swarm_public_network_name }}"
+{% if landingpage_autoupdate is defined and landingpage_autoupdate %}
+    deploy:
+      labels:
+        - shepherd.autoupdate=true
+{% endif %}
 
 networks:
   "{{ docker_swarm_public_network_name }}":