Args configuration for googleCloudBuild dockerImage builder

[ethanhallb]

Expected behavior

The skaffold.yaml configuration for the googleCloudBuild remote builder, supports configuring extended builder image parameters/arguments to be passed into the builder image. ie, config that passes through to steps[].args in cloudbuild.yaml.

This would allow more builder images to operate for remote builds with Google Cloud Build.

An example of a GCB builder that requires step arguments is the gke-windows-builder for multi-architecture images

Actual behavior

There is no configuration option to define builder arguments/parameters within skaffold.yaml for googleCloudBuild remote building.

(Contrast with the docker buildArgs configuration that is possible in skaffold.yaml)

Information

• Skaffold version: v1.38.0
• Operating system: Debian 12 (rodete) amd64
• Installed via: skaffold.dev
• Contents of skaffold.yaml:

apiVersion: skaffold/v2beta28
kind: Config
metadata:
  name: test-win-go-http
build:
  googleCloudBuild:
    projectId: ticketingdevops-332715
    timeout: 3600
    logging: GCS_ONLY
    dockerImage: 'us-docker.pkg.dev/gke-windows-tools/docker-repo/gke-windows-builder:latest'
    concurrency: 1
  artifacts:
[...]

• Contents of cloudbuild.yaml I am trying to induce:

logsBucket: 'gs://ticketingdevops-332715-tf-demo-b1'
options:
  logging: GCS_ONLY
timeout: 3600s
steps:
- name: 'us-docker.pkg.dev/gke-windows-tools/docker-repo/gke-windows-builder:latest'
  args:
  - '--project'
  - 'ticketingdevops-332715'
  - '--network'
  - 'ticketing-vpc'
  - '--subnetwork'
  - 'ticketing-vpc'
  - --serviceAccount
  - 'cloud-builder-tf-iam-tf-cb@ticketingdevops-332715.iam.gserviceaccount.com'
  - --container-image-name
  - 'us-central1-docker.pkg.dev/ticketingdevops-332715/devops-iac/windows-hello:tag1'
  # Specify specific variants of images to be built. Or, remove the following 2 lines to default to all available variants.
  - --versions
  - '20H2,ltsc2019'

Steps to reproduce the behavior

Feature gap.