Running in Docker without TTY

[omerlh]

When running kubetest inside docker without tty (e.g. without -it), it failed with the following error:

level=error msg="The document stdin appears to be empty"

I think the error is from this line, but I'm not sure why it happens. To reproduce, you can run:

docker run -v local/kubetest:3 kubetest

I've pretty much copied your docker file.

[lukebond]

Same. Think it would be best to check for filename args on the command-line first, then if none, do that check for stdin content as it seems that check is incorrect in some cases, and then we'd have a workaround.