Yet more fixes to actions #4

	# Build and run sub-project 'app' (GitHub action)
	name: build run app

	on: [push]

	permissions:
	contents: read

	jobs:
	build-run-app-Ubuntu-jdk-17:

	runs-on: ubuntu-latest

	steps:
	- run: echo "Branch ${{ github.ref }} of repository ${{ github.repository }}."
	- uses: actions/checkout@v4

	- name: Set up JDK 17
	uses: actions/setup-java@v4
	with:
	distribution: 'temurin'
	java-version: '17'

	- name: Setup Gradle
	uses: gradle/actions/setup-gradle@v4

	- name: Validation
	uses: gradle/actions/wrapper-validation@v4

	- name: Assemble the project
	run: ./gradlew assemble

	- name: Smoke test with Gradle
	run: ./gradlew --no-daemon app:run

	- name: Clean up Gradle cache
	# Remove some files from the Gradle cache, so they aren't cached
	# by GitHub Actions. Restoring these files from a GitHub Actions
	# cache might cause problems for future builds.
	#https://docs.github.com/en/actions/guides/building-and-testing-java-with-gradle#caching-dependencies
	run: \|
	rm -f ~/.gradle/caches/modules-2/modules-2.lock
	rm -f ~/.gradle/caches/modules-2/gc.properties

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