Nextcloud docker add ffmpeg

Unraid Nextcloud docker Add video preview

1.  Open docker console
2. run apk update and apk add vim
3. run apk add ffmpeg
4. go to /config/www/nextcloud/config, 
5. vim config.php
6. add following 

‘enable_previews’ => true,
‘enabledPreviewProviders’ =>
array (
0 => ‘OC\\Preview\\Movie’,
1 => ‘OC\\Preview\\PNG’,
2 => ‘OC\\Preview\\JPEG’,
3 => ‘OC\\Preview\\GIF’,
4 => ‘OC\\Preview\\BMP’,
5 => ‘OC\\Preview\\XBitmap’,
6 => ‘OC\\Preview\\MP3’,
7 => ‘OC\\Preview\\MP4’,
8 => ‘OC\\Preview\\TXT’,
9 => ‘OC\\Preview\\MarkDown’,
10 => ‘OC\\Preview\\PDF’,
),

        7.  Esc, :wq!  save the file and exit.

        8. restart the docker.