add functionality that cancels the TaskRun when the pod encounters an error such as InvalidImageName

[yuzp1996]

Feature request

Add functionality to cancel the taskrun when the pod encounters an error that maybe can not be fixed like InvalidImageName

Use case

When the taskrun related pod is pending for some image error, we should let users choose if they want to cancel the taskrun or not. For example, when the pod is pending for InvalidImageName the user may want to cancel the taskrun.

related discussion: #4846 (comment)

[yuzp1996]

related PR: #4618

[imjasonh]

I don't think it should be possible to create a TaskRun with an invalid image name, since we parse and lookup the requested image in order to resolve the entrypoint.

I suppose it's possible that if the image is specified by digest and the command is set, we might not do the lookup (I'm not sure, I'd have to check), and that in that case if the specified image name is invalid, we'd let it proceed and create the Pod, but in general I think the answer is to validate and fail early in that case instead of letting the Pod run until the image name can be corrected.

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