Transition from Docker registry images to Google Artifact Registry tags for image references

[jakubno]

• Eliminates the need for a local Docker client during Terraform runs. This improves portability and avoids failures on systems where Docker isn’t available or configured.
• Corrects an issue where Terraform would incorrectly resolve a locally cached :latest image. Terraform now consistently pulls/uses the intended remote image instead of relying on stale local state.

---

Note

Switch Terraform image references to Google Artifact Registry data sources (dropping Docker provider/resources) and relocate Docker auth from the composite action to the build workflow.

• Infrastructure (Terraform/Nomad):
  • Replace Docker provider/resources with google_artifact_registry_docker_image data sources in nomad/images.tf and update Nomad jobs to use .self_link for api, db-migrator, docker-reverse-proxy, client-proxy, and clickhouse-migrator images.
  • Remove Docker and Grafana providers/config from main.tf; simplify required providers.
• CI/CD:
  • Remove Docker setup from ./.github/actions/deploy-setup/action.yml.
  • Add Docker auth/setup step to .github/workflows/build-and-upload-job.yml.
• Lockfile:
  • Drop grafana/grafana and kreuzwerker/docker providers from iac/provider-gcp/.terraform.lock.hcl.

^{Written by Cursor Bugbot for commit b78d4a5. This will update automatically on new commits. Configure here.}

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[dobrac]

This is very nice change 🙌