Added unbound for stack flavor

setup/flavors/stack/docker-compose.yml

@@ -28,6 +28,15 @@ services:
       - "{{ root }}/certs:/certs"
     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 }}
@@ -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' %}