cloudbuild.yaml

steps:
# Set a persistent volume according to https://cloud.google.com/cloud-build/docs/build-config (search for volumes)
- name: 'ubuntu'
  volumes:
  - name: 'vol1'
    path: '/persistent_volume'
  args: ['cp', '-a', '.', '/persistent_volume']
  
# Build APK with Gradle Image from mounted /persistent_volume using name: vol1
- name: 'gcr.io/cloud-builders/docker'
  volumes:
  - name: 'vol1'
    path: '/persistent_volume'
  args: ['run', '-v', 'vol1:/home/app', '--rm', 'gcr.io/fullstackgcp/gradle', '/bin/sh', '-c', 'cd /home/app && ./gradlew clean assembleDebug']

# Push the APK Output from vol1 to your GCS Bucket with Short Commit SHA.
- name: 'gcr.io/cloud-builders/gsutil'
  volumes:
  - name: 'vol1'
    path: '/persistent_volume'
  args: ['cp', '/persistent_volume/app/build/outputs/apk/debug/app-debug.apk', 'gs://fullstackgcp-apk-builds/app-debug-$SHORT_SHA.apk']

timeout: 1200s