add bounded concurrency for tag lookup and untag #1955

	name: conformance

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	on:
	pull_request:
	push:

	permissions:
	contents: read # to fetch code (actions/checkout)

	jobs:
	run-conformance-test:
	runs-on: ubuntu-latest
	steps:
	-
	name: Checkout
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	-
	name: Build image
	uses: docker/bake-action@v4
	with:
	targets: image-local
	-
	name: Start distribution server
	run: \|
	IP=`hostname -I \| awk '{print $1}'`
	echo "IP=$IP" >> $GITHUB_ENV
	echo "OCI_ROOT_URL=http://$IP:5000" >> $GITHUB_ENV
	DISTRIBUTION_REF="registry:local"
	docker run --rm -p 5000:5000 -e REGISTRY_STORAGE_DELETE_ENABLED=true -idt "registry:local"
	-
	name: Run OCI Distribution Spec conformance tests
	uses: opencontainers/distribution-spec@v1.0.1
	env:
	OCI_ROOT_URL: ${{ env.OCI_ROOT_URL }}
	OCI_NAMESPACE: oci-conformance/distribution-test
	OCI_TEST_PULL: 1
	OCI_TEST_PUSH: 1
	OCI_TEST_CONTENT_DISCOVERY: 1
	OCI_TEST_CONTENT_MANAGEMENT: 1
	OCI_HIDE_SKIPPED_WORKFLOWS: 1
	-
	name: Move test results
	run: mkdir -p .out/ && mv {report.html,junit.xml} .out/
	-
	name: Upload test results
	uses: actions/upload-artifact@v4.3.0
	with:
	name: oci-test-results-${{ github.sha }}
	path: .out/
	if-no-files-found: error

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