Add missing description label to downstream containerfile [BP] #196

Namespace: <a href="https://detailurl.setting.custom-console-url-namespace.is.not.configured" rel="nofollow">ocp-network-observab-tenant
PipelineRun: <a href="https://console.redhat.com/application-pipeline/ns/ocp-network-observab-tenant/pipelinerun/network-observability-cli-container-1-8-on-pull-request-j7wxf" rel="nofollow">network-observability-cli-container-1-8-on-pull-request-j7wxf

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Red Hat Konflux/network-observability-cli-container-1-8-on-pull-request has successfully validated your commit.

Status	Duration	Name
✅ Succeeded	6 seconds	init
✅ Succeeded	15 seconds	clone-repository
✅ Succeeded	51 seconds	prefetch-dependencies
✅ Succeeded	14 minutes	build-container
✅ Succeeded	3 minutes	build-container
✅ Succeeded	7 minutes	build-container
✅ Succeeded	9 minutes	build-container
✅ Succeeded	33 seconds	build-image-index
✅ Succeeded	3 minutes	clair-scan
✅ Succeeded	27 seconds	sast-snyk-check
✅ Succeeded	15 seconds	push-dockerfile
✅ Succeeded	15 seconds	apply-tags
✅ Succeeded	5 minutes	clamav-scan
✅ Succeeded	18 seconds	rpms-signature-scan
✅ Succeeded	13 seconds	deprecated-base-image-check
✅ Succeeded	1 minute	build-source-image
✅ Succeeded	2 minutes	ecosystem-cert-preflight-checks
✅ Succeeded	6 seconds	show-sbom