Added all readme, help text and configs

dockcheck.sh

@@ -44,6 +44,7 @@ Help() {
   echo "-I     Prints custom releasenote urls alongside each container with updates in CLI output (requires urls.list)."
   echo "-k N   Number of days to store image backups before pruning - this also enables the backup function."
   echo "-l     Only include containers with label set. See readme."
+  echo "-k N   DaysKept - enable backups of images prior to update and prunes backups older than N days."
   echo "-m     Monochrome mode, no printf colour codes and hides progress bar."
   echo "-M     Prints custom releasenote urls as markdown (requires template support)."
   echo "-n     No updates; only checking availability without interaction."