Add docker stack flavor

- Template still untested
- mailu.env and setup.html are symbolic links to compose flavor

setup/flavors/stack/docker-compose.yml

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+version: '3.6'
+
+services:
+
+# External dependencies
+  redis:
+    image: redis:alpine
+    restart: always
+    volumes:
+      - "{{ root }}/redis:/data"
+
+# Core services
+  front:
+    image: mailu/nginx:{{ version }}
+    env_file: {{ env }}
+    ports:
+    {% for port in (80, 443, 25, 465, 587, 110, 995, 143, 993) %}
+      - target: {{ port }}
+        published: {{ port }}
+        mode: overlay
+    {% endfor %}
+    volumes:
+      - "{{ root }}/certs:/certs"
+    deploy:
+      replicas: 1
+
+  admin:
+    image: mailu/admin:{{ version }}
+    env_file: {{ env }}
+    {% if not admin_enabled %}
+    ports:
+      - 127.0.0.1:8080:80
+    {% endif %}
+    volumes:
+      - "{{ root }}/data:/data"
+      - "{{ root }}/dkim:/dkim"
+    deploy:
+      replicas: 1
+
+  imap:
+    image: mailu/dovecot:{{ version }}
+    env_file: {{ env }}
+    environment:
+    # Default to 10.0.1.0/24
+      - POD_ADDRESS_RANGE={{ subnet }}
+    volumes:
+      - "{{ root }}/mail:/mail"
+      - "{{ root }}/overrides:/overrides"
+    deploy:
+      replicas: 1
+
+  smtp:
+    image: mailu/postfix:{{ version }}
+    env_file: {{ env }}
+    environment:
+      - POD_ADDRESS_RANGE={{ subnet }}
+    volumes:
+      - "{{ root }}/overrides:/overrides"
+    deploy:
+      replicas: 1
+
+  # Optional services
+  {% if antispam_enabled %}
+  antispam:
+    image: mailu/rspamd:{{ version }}
+    env_file: {{ env }}
+    environment:
+      - POD_ADDRESS_RANGE={{ subnet }}
+    volumes:
+      - "{{ root }}/filter:/var/lib/rspamd"
+      - "{{ root }}/dkim:/dkim"
+      - "{{ root }}/overrides/rspamd:/etc/rspamd/override.d"
+    deploy:
+      replicas: 1
+  {% endif %}
+
+  {% if antivirus_enabled %}
+  antivirus:
+    image: mailu/clamav:{{ version }}
+    env_file: {{ env }}
+    volumes:
+      - "{{ root }}/filter:/data"
+    deploy:
+      replicas: 1
+  {% endif %}
+
+  {% if webdav_enabled %}
+  webdav:
+    image: mailu/none:{{ version }}
+    env_file: {{ env }}
+    volumes:
+      - "{{ root }}/dav:/data"
+    deploy:
+      replicas: 1
+  {% endif %}
+
+  {% if fetchmail_enabled %}
+  fetchmail:
+    image: mailu/fetchmail:{{ version }}
+    env_file: {{ env }}
+    volumes:
+      - "{{ root }}/data:/data"
+    deploy:
+      replicas: 1
+  {% endif %}
+
+  {% if webmail_type != 'none' %}
+  webmail:
+    image: mailu/roundcube:{{ version }}
+    env_file: {{ env }}
+    volumes:
+      - "{{ root }}/webmail:/data"
+    deploy:
+      replicas: 1
+  {% endif %}
+
+networks:
+  default:
+    driver: overlay
+    ipam:
+      driver: default
+      config:
+        - subnet: {{ subnet }}

setup/flavors/stack/mailu.env

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+../compose/mailu.env

setup/flavors/stack/setup.html

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+../compose/setup.html