steps:
- name: 'gcr.io/cloud-builders/docker'
  args: [ 'build', '--target', '$_NODE_ENV',  '-t', 'europe-west1-docker.pkg.dev/$_AR_PROJECT_ID/$_AR_REPOSITORY/xtablo-source/xtablo-api', '.' ]
  
# substitutions:
#   _AR_ENV: 'production'