Update Timestamp #1501

	#
	# Copyright 2022 The Sigstore Authors.
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.

	name: Cosign tests

	on:
	workflow_dispatch:
	push:
	paths:
	- 'repository/**'
	pull_request:

	jobs:
	validate:
	env:
	COSIGN_EXPERIMENTAL: "true"
	runs-on: ubuntu-latest
	steps:
	# Install cosign
	- uses: sigstore/cosign-installer@59acb6260d9c0ba8f4a2f9d9b48431a222b68e20 # v3.5.0

	# Set up a repository server with python
	- uses: actions/setup-python@0a5c61591373683505ea898e09a3ea4f39ef2b9c # v5.0.0
	with:
	python-version: '3.x'
	- uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
	with:
	fetch-depth: 2
	- run: \|
	cd repository/repository/
	python -m http.server 8001 &
	echo "REPO=http://localhost:8001" >> $GITHUB_ENV

	# Test cosign initialize
	- name: cosign initialize on published repository
	run: cosign initialize --mirror http://localhost:8001

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