pipe google-gke-kubectl-run; support kustomize (apply -k)

Hi,

I'm trying to use the google gke kubectl pipe to deploy to a kubernetes cluster ( https://bitbucket.org/atlassian/google-gke-kubectl-run/src/master/). How can I use pipe to apply using a kustomization directory, like:

kubectl apply -k kustomize/stage

If i set KUBECTL_COMMAND to apply, then the pipeline fails as the RESOURCE_PATH variable is mandatory.. Setting this to a dummy variable will result in a corrupt command:

kubectl apply -f dummy.yml -k kustomize/stage

which fails as kubectl apply doesn't accept both -f and -k flags to be set

Regards,

Abe