Refactor makefile to add deployment for mailserver stack

makefile

@@ -121,4 +121,12 @@ deploy-searxng: pull
 	set +a ;\
 	docker stack deploy --compose-file ./swarm/searxng.yml searxng ;\
 	}
+deploy-mailserver: pull
+	{ \
+	echo "Deploying the mailserver stack..." ;\
+	set -a ;\
+	. ./swarm/.env ;\
+	set +a ;\
+	docker stack deploy --compose-file ./swarm/mailserver.yml mailserver ;\
+	}
 # git submodule update --init --recursive

swarm/mailserver.yml

@@ -0,0 +1,54 @@
+services:
+  mail:
+    image: tvial/docker-mailserver:latest
+    ports:
+      - target: 25
+        published: 25
+        protocol: tcp
+        mode: host
+      - target: 587
+        published: 587
+        protocol: tcp
+        mode: host
+      - target: 993
+        published: 993
+        protocol: tcp
+        mode: host
+      - target: 995
+        published: 995
+        protocol: tcp
+        mode: host
+    volumes:
+      - /var/data/docker-mailserver/maildata:/var/mail
+      - /var/data/docker-mailserver/mailstate:/var/mail-state
+      - /var/data/docker-mailserver/config:/tmp/docker-mailserver
+      - /var/data/docker-mailserver/letsencrypt:/etc/letsencrypt
+    env_file: /var/data/docker-mailserver/docker-mailserver.env
+    networks:
+      - internal
+
+  rainloop:
+    image: hardware/rainloop
+    volumes:
+      - /var/data/docker-mailserver/rainloop:/rainloop/data
+    networks:
+      - internal
+      - traefik-public
+    deploy:
+      labels:
+        - traefik.enable=true
+        - traefik.docker.network=traefik-public
+        - traefik.constraint-label=traefik-public
+        - traefik.http.routers.rainloop.entrypoints=https
+        - traefik.http.routers.rainloop.rule=Host(`webmail.${DOMAIN}`)
+        - traefik.http.routers.rainloop.tls.certresolver=le
+        - traefik.http.services.rainloop.loadbalancer.server.port=8888
+
+networks:
+  traefik-public:
+    external: true
+  internal:
+    driver: overlay
+    ipam:
+      config:
+        - subnet: 172.16.2.0/24