Tiltfile that checks kube context against safe list

.tilt.json

{
  "allowed_context": "minikube"
}

Tiltfile

settings = read_json(".tilt.json")

def enforce_context(allowed_context):
  if allowed_context == "":
    return

  current_context = str(local('kubectl config current-context')).rstrip('\n')
  if current_context != allowed_context:
    fail("Context %s is not allowed. Only the %s context is allowed." % (current_context, allowed_context))

allowed_context = settings.get("allowed_context", "")
enforce_context(allowed_context)