* Replaced `systemProperties` with `systemPropertyVariables` #40

	# Licensed to the Apache Software Foundation (ASF) under one
	# or more contributor license agreements. See the NOTICE file
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	# to you under the Apache License, Version 2.0 (the
	# "License"); you may not use this file except in compliance
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	#
	# http://www.apache.org/licenses/LICENSE-2.0
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	# KIND, either express or implied. See the License for the
	# specific language governing permissions and limitations
	# under the License.
	#
	name: SitePublishing

	on:
	push:
	branches: [ master ]

	jobs:
	update-site:
	name: Linux
	runs-on: ubuntu-latest
	steps:
	- name: 'Checkout'
	uses: actions/checkout@v3
	- name: Cache local Maven repositories
	uses: actions/cache@v3
	with:
	path: \|
	~/.m2/repository
	./**/.m2/repository
	key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
	restore-keys: \|
	${{ runner.os }}-maven-
	- name: 'Setup Java Version'
	uses: actions/setup-java@v3
	with:
	java-version: 18
	distribution: 'temurin'
	cache: maven
	- name: 'Build'
	run: unset JAVA_TOOL_OPTIONS;mvn -V --no-transfer-progress verify site:site site:stage
	- name: 'Deploy to gh-pages'
	uses: JamesIves/github-pages-deploy-action@releases/v4
	with:
	branch: gh-pages
	folder: target/staging
	target-folder: snapshot

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