Add Gotify default user credentials to compose file

duplicati/compose.yml

@@ -8,6 +8,8 @@ services:
       - PGID=0
       - TZ=Europe/Amsterdam
       - SETTINGS_ENCRYPTION_KEY=MijnSuperVeiligeKey2026!
+      - GOTIFY_DEFAULTUSER_NAME=Misticdruid
+      - GOTIFY_DEFAULTUSER_PASS=4A9n*$3#IPj*Xf
     volumes:
       - /opt/duplicati/config:/config
       - /var/lib/docker/volumes:/source:ro