Add docker compose

Stalwart/docker-compose.yml

@@ -0,0 +1,21 @@
+services:
+  stalwart:
+    build:
+      context: .
+      dockerfile: Dockerfile.stalwart
+    container_name: stalwart
+    restart: unless-stopped
+    ports:
+      - "8443:443"
+      - "8080:8080"
+      - "25:25"
+      - "587:587"
+      - "465:465"
+      - "143:143"
+      - "993:993"
+      - "4190:4190"
+      - "110:110"
+      - "995:995"
+    volumes:
+      - /var/lib/stalwart:/opt/stalwart
+      - /etc/foundationdb:/etc/foundationdb/