Solvedcloud builders How do I run kubectl after image push?

steps:
- name: 'gcr.io/cloud-builders/docker'
  args: ["build", "-t", "gcr.io/my-project/frontend", "."]
- name: 'gcr.io/cloud-builders/docker'
  args: ["push", "gcr.io/my-project/frontend"]
- name: 'gcr.io/cloud-builders/gcloud'
  entrypoint: 'bash'
  args:
  - '-c'
  - |
    gcloud components install kubectl
    gcloud container clusters get-credentials <my-cluster> --zone <my-zone>
    kubectl set image deployment/frontend frontend=gcr.io/my-project/frontend

export CLOUDSDK_CONTAINER_USE_APPLICATION_DEFAULT_CREDENTIALS=true
gcloud container clusters get-credentials mycluster
kubectl config view --minify --flatten > kubeconfig

- name: 'gcr.io/cloud-builders/docker'
  args: ["push", "gcr.io/$PROJECT_ID/imagename:$BRANCH_NAME-$REVISION_ID"]
- name: 'gcr.io/cloud-builders/gcloud'
  entrypoint: 'bash'
  args:
  - '-c'
  - |
    gcloud components install kubectl
    gsutil cp gs://owner_secrets/cloud_build/$PROJECT_ID-cloudbuild.json .
    gsutil cp gs://owner_secrets/cloud_build/$PROJECT_ID-kubeconfig .
    export GOOGLE_APPLICATION_CREDENTIALS=$PROJECT_ID-cloudbuild.json
    export KUBECONFIG=$PROJECT_ID-kubeconfig
    kubectl set image deployment/deploy_name imagename=gcr.io/$PROJECT_ID/imagename:$BRANCH_NAME-$REVISION_ID --namespace=$BRANCH_NAME

steps:
- name: 'gcr.io/$PROJECT_ID/envsubst'
  args: ['/workspace/kubernetes.yaml', '/workspace/kubernetes.yaml']
  env:
  - 'TAG=$TAG_NAME'
- name: 'gcr.io/cloud-builders/docker'
  args: ['build', '--build-arg', 'PROJECT_ID=$PROJECT_ID', '--cache-from', 'gcr.io/$PROJECT_ID/my-project:latest', '-t', 'gcr.io/$PROJECT_ID/my-project:$TAG_NAME', '-t', 'gcr.io/$PROJECT_ID/my-project:latest', '.']
- name: 'gcr.io/cloud-builders/docker'
  args: ['push', 'gcr.io/$PROJECT_ID/my-project:$TAG_NAME']
- name: 'gcr.io/cloud-builders/kubectl'
  env: ['CLOUDSDK_COMPUTE_ZONE=us-central1-a', 'CLOUDSDK_CONTAINER_CLUSTER=my-cluster']
  args: ['apply', '-f', '/workspace/kubernetes.yaml']
images: ['gcr.io/$PROJECT_ID/my-project:latest']

FROM alpine:3.6
MAINTAINER Nick Richardson <nick.richardson@mediapixeldesign.com>
RUN apk --update add gettext-dev

ADD envsubst-file.sh /
RUN chmod +x /envsubst-file.sh

ENTRYPOINT ["/envsubst-file.sh"]

#!/bin/sh

FILENAME=$1
FILENAME_NEW=$2

if [ ! $FILENAME ]
then
  echo 'No filename argument provided'
  exit -1
fi
if [ ! $FILENAME2 ]
then
  FILENAME_NEW=$FILENAME
fi
echo "Processing $FILENAME ..."

envsubst < $FILENAME > $FILENAME-bak
echo "Finished modifying file"
mv $FILENAME-bak $FILENAME_NEW

steps:
- name: 'gcr.io/cloud-builders/docker'
  args: ['build', '-t', 'gcr.io/$PROJECT_ID/foo', '.']
- name: 'gcr.io/cloud-builders/docker'
  args: ['push', 'gcr.io/$PROJECT_ID/foo']
- name: 'gcr.io/cloud-builders/kubectl'
  args: ['run', 'foo-pod', '--image=gcr.io/$PROJECT_ID/foo']
images: ['gcr.io/$PROJECT_ID/foo']