update README

README.md

@@ -3,3 +3,21 @@
 Docker deployment for [DarkflameUniverse/NexusDashboard](https://github.com/DarkflameUniverse/NexusDashboard)
 
 Is available at: https://nexus.ar21.de
+
+How to host with docker-compose:
+```
+version: "3"
+
+services:
+  darkflame_nexus:
+    container_name: darkflame_nexus
+    image: aaronriedel/nexus
+    restart: unless-stopped
+    volumes:
+      - /dockerfiles/darkflame_client:/home/docker/NexusDashboard/app/luclient:rw
+      - /dockerfiles/darkflame_cachedir:/home/docker/NexusDashboard/app/cache:rw
+      - /dockerfiles/darkflame_nexus/settings.py:/home/docker/NexusDashboard/app/settings.py
+    environment:
+      - APP_DATABASE_URI=mysql+pymysql://DBusername:DBpassword@localhost/DBname
+      - APP_SECRET_KEY=YOUR_SECRET
+```