Templatable contextname

[lalyos]

Use-case

when I create multiple users and save the kubeconfig as documented

kubectl get kubeconfig darren -o json | jq .spec > kubeconfig-darren
kubectl get kubeconfig lalyos -o json | jq .spec > kubeconfig-lalyos

Usually its easier to switch between context, than switching between KUBECONFIGs,
so usuallymerge the together as:

export KUBECONFIG=$KUBECONFIG:./kubeconfig-darren:./kubeconfig-lalyos

but if KLUM has a fixed contextName it doesn't work.

Proposed solution

Instead of a fixed string context-name let's make it a golang template. For example:

CONTEXT_NAME=workshop-{{ .UserName }}

with the above KUBECONFIG merge it has distinct contexts:

k config get-contexts 
CURRENT   NAME              CLUSTER           AUTHINFO          NAMESPACE
*         boss              singli            singli            klum
          workshop-darren   workshop-darren   workshop-darren     
          workshop-lalyos   workshop-lalyos   workshop-lalyos

why send the PR

I've seen at dockerhub that the image was updated "4 months ago" and it has 8k pulls, so why not?

[jadolg]

I just made a change in my fork that solves this issue differently if you're still interested.