Cloud Build, maven package, no target folder

Question

  - name: 'gcr.io/cloud-builders/mvn'
    args: ['clean',
           'package',
           '-Ddockerfile.skip',
           '-DskipTests'
    ]

  - name: 'gcr.io/cloud-builders/mvn'
    args: ['dockerfile:build',
           '-Ddockerfile.skip',
           '-DskipTests'
    ]

when I run these two commands on top locally, I do have the target folder with docker folder and the image-name file in it

On this step it fails: ..

  - name: 'gcr.io/cloud-builders/docker'
    entrypoint: 'bash'
    args:
      - -c
      - |
          docker push $(cat /workspace/target/docker/image-name)

cat: /workspace/target/docker/image-name: No such file or directory

I tried target/docker, app/target/docker

In My Dockerfile:

  ...
    WORKDIR /app
    ...
    ADD target/${JAR_FILE} app.jar
    ...

Question: how to see target folder, how to make docker push $(cat /workspace/target/docker/image-name) work?

Answer 1

similar to answer here: Cloud Build fails to build the the simple build step with maven

• how to see target folder
  • there isn't currently a way to check the remote workspace for the target folder, but you can debug with cloud-build-local and write the workspace locally.
  • https://cloud.google.com/cloud-build/docs/build-debug-locally
  • https://github.com/GoogleCloudPlatform/cloud-build-local
• make sure that target/ or .jar files are not being ignored by gcloudignore or gitignore
  • https://cloud.google.com/sdk/gcloud/reference/topic/gcloudignore
  • https://github.com/GoogleCloudPlatform/cloud-builders/issues/236

• I also wonder if the docker step is not picking up on what is being produced by the dockerfile plugin, does dockerfile:push work?

  steps:
  - name: 'gcr.io/cloud-builders/mvn'
    args: ['dockerfile:build']
  - name: 'gcr.io/cloud-builders/mvn'
    args: ['dockerfile:push']