Update build.func

fixes https://github.com/tteck/Proxmox/issues/2894

misc/build.func

@@ -595,6 +595,7 @@ EOF
     fi
   else
     if [[ "$APP" == "Channels" || "$APP" == "Emby" || "$APP" == "Frigate" || "$APP" == "Jellyfin" || "$APP" == "Plex" || "$APP" == "Scrypted" || "$APP" == "Tdarr" || "$APP" == "Unmanic" ]]; then
+      if [[ -e "/dev/dri/renderD128" ]]; then
         if [[ -e "/dev/dri/card0" ]]; then
           cat <<EOF >>$LXC_CONFIG
 # VAAPI hardware transcoding
@@ -610,6 +611,7 @@ EOF
         fi
       fi
     fi
+  fi
 
   # This starts the container and executes <app>-install.sh
   msg_info "Starting LXC Container"