Drone-kube-runner has no DRONE_STEP_NAME env variable during building

hello

I found a env variable “DRONE_STEP_NAME” in the document: https://docs.drone.io/pipeline/environment/reference/drone-step-name/

but when I use the drone-kube-runner,I cant’t get the variable.

versions:
drone: drone:1.9.0
runner: drone-runner-kube:1.0.0-beta.4

.drone.yml:

kind: pipeline
type: kubernetes
name: default

steps:
- name: greeting
  image: alpine
  commands:
  - echo hello
  - echo world
  - "ls -la"
  - env
  - echo $DRONE_STEP_NAME
  - echo $DRONE_BRANCH

build log:

125 + echo $DRONE_STEP_NAME
126
127 + echo $DRONE_BRANCH
128 master

I fixed it myself.Waiting to merge: https://github.com/drone-runners/drone-runner-kube/pull/38