message: Reorder sentinel file check
diff: @@ -61,7 +61,7 @@ export async function waitForUnpack(ctx, url) {
  }
  const result = await res.text();
  - if (SENTINEL_SUCCESS_VALUE !== result) {
  + if (result !== SENTINEL_SUCCESS_VALUE) {
  bail(new Error('Zip file failed to unpack remotely.'));
  } else {
  ctx.log.debug(`Sentinel file present, continuing.`);
  