Increase preview support

nextcloud/rootfs/etc/cont-init.d/02-init_steps.sh

@@ -150,7 +150,7 @@ if bashio::config.true "enable_thumbnails"; then
     sudo -u abc php /app/www/public/occ config:system:set preview_ffmpeg_path --value='/usr/bin/ffmpeg'
     sudo -u abc php /app/www/public/occ config:system:set enable_previews --value=true
     i=0
-    for element in TXT MarkDown OpenDocument PDF Image TIFF SVG Font MP3 Movie MKV MP4 AVI; do # Comma separated values
+    for element in AVI BMP Font GIF HEIC Image JPEG Krita MarkDown MKV Movie MP3 MP4 OpenDocument PDF PNG SVG TIFF TXT XBitmap; do # Comma separated values
         sudo -u abc php /app/www/public/occ config:system:set enabledPreviewProviders "$i" --value="OC\\Preview\\${element}" >/dev/null
         i=$((i + 1))
     done