cloudbuild.yaml

steps:
- name: gcr.io/cloud-builders/gcloud
  entrypoint: 'bash'
  args: [ '-c', 'gcloud secrets versions access latest --secret=$_DOCKER_TOKEN > docker_token.txt' ]
- name: 'gcr.io/cloud-builders/docker'
  entrypoint: 'bash'
  args: ['-c', 'docker login --username=$_DOCKER_ACCOUNT --password-stdin < docker_token.txt']
- name: 'ubuntu'
  entrypoint: 'bash'
  args:
  - '-c'
  - |
    echo $TAG_NAME | sed -e "s#[^0-9]*\([0-9]*\)[.]\([0-9]*\)[.]\([0-9]*\)\([0-9A-Za-z-]*\)#\1#" > major
    echo $TAG_NAME | sed -e "s#[^0-9]*\([0-9]*\)[.]\([0-9]*\)[.]\([0-9]*\)\([0-9A-Za-z-]*\)#\2#" > minor
- name: 'gcr.io/cloud-builders/docker'
  entrypoint: 'bash'
  args:
    - '-c'
    - |
      docker build -t $_DOCKER_ACCOUNT/$PROJECT_ID:$TAG_NAME -t $_DOCKER_ACCOUNT/$PROJECT_ID:latest -t $_DOCKER_ACCOUNT/$PROJECT_ID:$(cat major).$(cat minor) -t $_DOCKER_ACCOUNT/$PROJECT_ID:$(cat major) .
      docker push $_DOCKER_ACCOUNT/$PROJECT_ID:$TAG_NAME
      docker push $_DOCKER_ACCOUNT/$PROJECT_ID:$(cat major)
      docker push $_DOCKER_ACCOUNT/$PROJECT_ID:$(cat major).$(cat minor)
      docker push $_DOCKER_ACCOUNT/$PROJECT_ID:latest