fix: allow 404 on tag list for virtual repositories #346

	name: build-pr

	on:
	pull_request:
	branches:
	- main

	jobs:
	run:
	runs-on: ubuntu-latest

	strategy:
	matrix:
	go: ['1.21', '1.22']

	steps:
	- name: checkout source code
	uses: actions/checkout@v3

	- name: setup go environment
	uses: actions/setup-go@v3
	with:
	go-version: ${{ matrix.go }}

	- name: run tests
	id: tests
	run: \|
	export PATH="$(go env GOPATH)/bin:${PATH}"
	make install.tools
	make .gitvalidation
	make docs conformance

	set +e
	make registry-ci conformance-ci
	CONFORMANCE_RC="$?"
	set -e
	if [[ -f report.html ]]; then
	echo "Found report.html."
	echo "has-report=true" >> $GITHUB_OUTPUT
	fi
	echo "Conformance return code: ${CONFORMANCE_RC}"
	exit ${CONFORMANCE_RC}

	- name: Upload OCI conformance results as build artifact
	if: always() && steps.tests.outputs.has-report == 'true'
	uses: actions/upload-artifact@v3
	with:
	name: oci-conformance-results-${{ matrix.go }}
	path: \|
	./report.html
	./junit.xml

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