diff --git a/nextcloud/docker-compose.yml b/nextcloud/docker-compose.yml
index c76d881..1dd7475 100644
--- a/nextcloud/docker-compose.yml
+++ b/nextcloud/docker-compose.yml
@@ -1,33 +1,73 @@
 # inspired by https://docs.techdox.nz/nextcloud/
+# https://github.com/nextcloud/docker/issues/2266#issue-2417582602
+# https://hub.docker.com/_/nextcloud
+# https://roody.io/blog/install-nextcloud-with-docker
 
 services:
   mariadb:
-    image: mariadb:10.5.16
-    # image: mariadb:10.11.9
-    restart: always
+    # image: mariadb:10.5.16
+    image: mariadb:10.11.11
+    restart: unless-stopped
     command: --transaction-isolation=READ-COMMITTED --log-bin=binlog --binlog-format=ROW
+    # command: mysqld
     volumes:
-      - /volume2/docker_1/nextcloud-mariadb:/var/lib/mysql
+      - /volume2/docker/nextcloud-mariadb:/var/lib/mysql
+    ports:
+      - 3306:3306
     environment:
       - MYSQL_ROOT_PASSWORD=pass1234
       - MYSQL_PASSWORD=pass1234
       - MYSQL_DATABASE=nextcloud
       - MYSQL_USER=nextadm
+    network_mode: bridge
+
+  redis:
+    image: redis:7.2.7-alpine3.21
+    command: redis-server --requirepass redispass1234
+    restart: unless-stopped
+    network_mode: bridge
+    ports:
+      - 6379:6379
 
   app:
-    image: nextcloud:29.0.8
-    # image: nextcloud:30.0.4
-    restart: always
+    # image: nextcloud:29.0.8
+    image: nextcloud:30.0.6
+    restart: unless-stopped
     ports:
       - 3002:80
     depends_on:
-      - db
+      - mariadb
+      - redis
     volumes:
-      - /volume2/docker_1/docker/nextcloud:/var/www/html
+      - /volume2/docker/nextcloud:/var/www/html
     environment:
-      - MYSQL_PASSWORD=pass1234
-      - MYSQL_DATABASE=nextcloud
-      - MYSQL_USER=nextadm
-      - MYSQL_HOST=db
       - PHP_MEMORY_LIMIT=1024M
-      - PHP_UPLOAD_LIMIT=1024M
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+      - PHP_UPLOAD_LIMIT=1024M
+      # db passwords are not needed here, as they are configured in the config.php
+      # - MYSQL_PASSWORD=pass1234
+      # - MYSQL_DATABASE=nextcloud  
+      # - MYSQL_USER=nextadm
+      # - MYSQL_HOST=mariadb
+      # - REDIS_HOST=redis
+      # - REDIS_HOST_PORT=6379
+      # - REDIS_HOST_PASSWORD=redispass1234
+    network_mode: bridge
+
+# https://sdk.collaboraonline.com/docs/installation/CODE_Docker_image.html
+  # collabora:
+  #   image: collabora/code
+  #   # container_name: collabora
+  #   # privileged: true
+  #   restart: unless-stopped
+  #   ports:
+  #     - 9980:9980
+  #   environment:
+  #     # - TZ=Europe/Zurich
+  #     - dictionaries=de_DE
+  #     - DONT_GEN_SSL_CERT=YES
+  #     - aliasgroup1=https://cloud.swaghausen.de
+  #     - server_name=collabora.swaghausen.de
+  #     - username=admin
+  #     - password=adminpass123
+  #     - "extra_params=--o:ssl.enable=false --o:ssl.termination=true"
+  #   network_mode: bridge
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