gcp cloud build - cannot use SHORT_SHA substitution-CodePudding

Execute gcloud builds submit from the local directory in my PC where the cloudbuild.yaml is located.

cloudbuild.yaml

steps:
  # Docker Build
  - name: 'gcr.io/cloud-builders/docker'
    args:
    - 'build'
    - '-t'
    - 'us-central1-docker.pkg.dev/$PROJECT_ID/diabetes-prediction/diabetes-prediction-api:$SHORT_SHA'
    - '-f'
    - 'src/serving/Dockerfile'
    - '.'

The build fails because SHORT_SHA is empty causing invalid tag name ending with diabetes-prediction-api:.

Starting Step #0
Step #0: Already have image (with digest): gcr.io/cloud-builders/docker
Step #0: invalid argument "us-central1-docker.pkg.dev/default-338305/diabetes-prediction/diabetes-prediction-api:" for "-t, --tag" flag: invalid reference format

Please advise what is wrong.

CodePudding user response：

You need to invoke the build as a trigger (from a repo) for the repo-specific values to be set.

See Using default substitutions