Improve folder recognition

#1784 (comment)

jellyfin/rootfs/etc/cont-init.d/01-migrate.sh

@@ -26,12 +26,21 @@ if [[ "$LOCATION" == "/config/addons_config/"* ]]; then
     LOCATION="${LOCATION/config/homeassistant}"
     mkdir -p /config/data
     if [ -d "$LOCATION" ]; then
-        cp -rf "$LOCATION"/* /config/data/
+        cp -rn "$LOCATION"/* /config/data/
         mv "$LOCATION" "$LOCATION"_migrated
     fi
     bashio::addon.option "data_location" "/config/data"
 fi
 
+if [[ -d "/homeassistant/addons_config/jellyfin" ]]; then
+    bashio::log.warning "Data folder was found in /config/addons_config/jellyfin, it is migrated to /config/data. The previous folder is renamed to _migrated"
+    mkdir -p /config/data
+    cp -rn "/homeassistant/addons_config/jellyfin/*" /config/data/
+    mv /homeassistant/addons_config/jellyfin /homeassistant/addons_config/jellyfin_migrated
+    ln -sf /config/data /config/addons_config/jellyfin
+    bashio::addon.option "data_location" "/config/data"
+fi
+
 # Migrate autoscripts
 if [ -f "/homeassistant/addons_autoscripts/$slug.sh" ]; then
     bashio::log.warning "Migrating autoscript"