- `account_file` (string) - The JSON file containing your account credentials. If specified, the account file will take precedence over any `googlecompute` builder authentication method. - `disk_size` (int64) - The size of the export instances disk. The disk is unused for the export but a larger size will increase `pd-ssd` read speed. This defaults to `200`, which is 200GB. - `disk_type` (string) - Type of disk used to back the export instance, like `pd-ssd` or `pd-standard`. Defaults to `pd-ssd`. - `machine_type` (string) - The export instance machine type. Defaults to `"n1-highcpu-4"`. - `network` (string) - The Google Compute network id or URL to use for the export instance. Defaults to `"default"`. If the value is not a URL, it will be interpolated to `projects/((builder_project_id))/global/networks/((network))`. This value is not required if a `subnet` is specified. - `subnetwork` (string) - The Google Compute subnetwork id or URL to use for the export instance. Only required if the `network` has been created with custom subnetting. Note, the region of the subnetwork must match the `zone` in which the VM is launched. If the value is not a URL, it will be interpolated to `projects/((builder_project_id))/regions/((region))/subnetworks/((subnetwork))` - `zone` (string) - The zone in which to launch the export instance. Defaults to `googlecompute` builder zone. Example: `"us-central1-a"` - `vault_gcp_oauth_engine` (string) - Vault GCP Oauth Engine - `service_account_email` (string) - Service Account Email