Example container builder cloudbuild.yaml for GKE demo.

cloudbuild.yaml

steps:
- name: ubuntu
  id: generate-image-tag
  entrypoint: bash
  args:
  - '-c'
  - echo $(date) | md5sum | awk '{print $1}' > tag.txt

- name: gcr.io/cloud-builders/docker
  id: docker-build-push
  entrypoint: bash
  args:
  - '-c'
  - |
    tag=`cat tag.txt`
    docker build -t "gcr.io/gke-playground/$BRANCH_NAME:$tag" .
    docker push "gcr.io/gke-playground/$BRANCH_NAME:$tag"
    
- name: gcr.io/cloud-builders/kubectl
  id: deploy-infrastructure
  env: ['CLOUDSDK_COMPUTE_ZONE=australia-southeast1-a', 'CLOUDSDK_CONTAINER_CLUSTER=features']
  entrypoint: bash
  args:
  - '-c'
  - |
    tag=`cat tag.txt`
    sed -e "s|_BRANCH_NAME|$BRANCH_NAME|g" -e "s|_TAG|$tag|g" deployment-template.yaml | tee deployment.yaml
    gcloud container clusters get-credentials --project="gke-playground" --zone="australia-southeast1-a" "features"
    kubectl apply -f deployment.yaml