Added unbound for stack flavor

setup/flavors/stack/docker-compose.yml

@@ -29,6 +29,15 @@ services:
     deploy:
       replicas: 1
       
+  {% if resolver_enabled %}
+  resolver:
+    image: mailu/unbound:{{ version }}
+    env_file: {{ env }}
+    networks:
+      default:
+        ipv4_address: {{ dns }}
+  {% endif %}
+
   admin:
     image: mailu/admin:{{ version }}
     env_file: {{ env }}
@@ -63,6 +72,10 @@ services:
       - "{{ root }}/overrides:/overrides"
     deploy:
       replicas: 1
+    {% if resolver_enabled %}
+    dns:
+      - {{ dns }}
+    {% endif %}
 
   # Optional services
   {% if antispam_enabled %}
@@ -77,6 +90,10 @@ services:
       - "{{ root }}/overrides/rspamd:/etc/rspamd/override.d"
     deploy:
       replicas: 1
+    {% if resolver_enabled %}
+    dns:
+      - {{ dns }}
+    {% endif %}
   {% endif %}
 
   {% if antivirus_enabled %}
@@ -87,6 +104,10 @@ services:
       - "{{ root }}/filter:/data"
     deploy:
       replicas: 1
+    {% if resolver_enabled %}
+    dns:
+      - {{ dns }}
+    {% endif %}
   {% endif %}
 
   {% if webdav_enabled %}
@@ -107,6 +128,10 @@ services:
       - "{{ root }}/data:/data"
     deploy:
       replicas: 1
+    {% if resolver_enabled %}
+    dns:
+      - {{ dns }}
+    {% endif %}
   {% endif %}
 
   {% if webmail_type != 'none' %}

setup/templates/steps/stack/03_expose.html

@@ -3,6 +3,13 @@
 and let users access their mailboxes. Mailu has some flexibility in the way
 you expose it to the world.</p>
 
+<div class="form-check form-check-inline">
+  <label class="form-check-label">
+    <input class="form-check-input" type="checkbox" name="resolver_enabled" value="true">
+    Enable unbound resolver
+  </label>
+</div>
+
 <div class="form-group">
   <label>Subnet</label>
   <input class="form-control" type="text" name="subnet" required pattern="^([0-9]{1,3}\.){3}[0-9]{1,3}(\/([0-9]|[1-2][0-9]|3[0-2]))$"