add mailhog

compose/magento-2/docker-compose.dev.yml

@@ -26,3 +26,9 @@ services:
   # Disabling cron by default as it uses higher CPU, enable if needed
   #cron:
   #  volumes: *appvolumes
+
+  mailhog:
+    image: mailhog/mailhog
+    ports:
+      - '1025:1025'
+      - '8025:8025'