feat(roles): Add auto updating to some roles

Miniflux, searx, shaarli and wallabag will be automatically updated by
shepherd.

roles/wallabag/defaults/main.yml

@@ -5,5 +5,7 @@ wallabag_upstream_file_dir: "{{ docker_stack_files_dir }}/{{ stack_name }}"
 
 wallabag_use_https: true
 
+wallabag_autoupdate: true
+
 # the subdomain link wallabag will be reachable under
 subdomain_alias: read

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

@@ -15,11 +15,16 @@ services:
       - data:/var/www/wallabag/data
     environment:
       - SYMFONY__ENV__FOSUSER_REGISTRATION=false
-{% if server_domain is not undefined and not none %}   
+{% if server_domain is not undefined and not none %}
       - "SYMFONY__ENV__DOMAIN_NAME={{ (wallabag_use_https == True) | ternary('https', 'http') }}://{{ (subdomain_alias is not undefined and not none) | ternary(subdomain_alias, stack_name) }}.{{server_domain}}"
 {% else %}
       - SYMFONY__ENV__DOMAIN_NAME={{ (wallabag_use_https == True) | ternary('https', 'http') }}://localhost
 {% endif %}
+{% if wallabag_autoupdate is defined and wallabag_autoupdate %}
+    deploy:
+      labels:
+        - shepherd.autoupdate=true
+{% endif %}
 
   redis:
     image: redis:alpine