chore(deps): update mariadb docker tag to v12

.env.sample

@@ -102,9 +102,6 @@ DEFAULT_QUOTA="10 GB"
 # USER_OIDC_LOGIN_ONLY=false
 # SECRET_USER_OIDC_SECRET_VERSION=v1
 
-# Image / PDF previews with Imaginary (see README)
-#COMPOSE_FILE="$COMPOSE_FILE:compose.imaginary-preview.yml"
-
 # HSTS Options
 # Uncomment this line to enable HSTS: https://docs.nextcloud.com/server/30/admin_manual/installation/harden_server.html
 #HSTS_ENABLED=1

README.md

@@ -315,20 +315,6 @@ docker exec -u www-data $(docker ps -f name=foo_com_app -q) ./occ preview:pre-ge
 
 This app will improve performance of image browsing at the cost of storage space.
 
-## Better image previews with `imaginary`
-
-1. Run `abra app config <domain>` and uncomment the line `#COMPOSE_FILE="$COMPOSE_FILE:compose.imaginary-preview.yml"`.
-2. Re-deploy the app (`abra app deploy <domain> --force`)
-3. Edit `/var/www/config/config.php` and add:
-
-  ```
-  'enabledPreviewProviders' => 
-  array (
-    0 => 'OC\\Preview\\Imaginary',
-  ),
-  'preview_imaginary_url' => 'http://imaginary:9000',
-  ```
-
 ## Fulltextsearch using elasticsearch
 
 1. Uncomment the following lines in your env file:

compose.imaginary-preview.yml

@@ -1,10 +0,0 @@
----
-version: '3.8'
-services:
-  imaginary:
-    image: nextcloud/aio-imaginary:20250822_112758
-    environment:
-      - PORT=9000
-    command: -concurrency 50 -enable-url-source -log-level debug
-    networks:
-      - internal

compose.mariadb.yml

@@ -9,7 +9,7 @@ services:
       - MYSQL_PASSWORD_FILE=/run/secrets/db_password
 
   db:
-    image: "mariadb:11.4"
+    image: "mariadb:12.3"
     environment:
       - MYSQL_DATABASE=nextcloud
       - MYSQL_USER=nextcloud