Bump actions/download-artifact from 1 to 4.1.7 in /.github/workflows #27

	name: Docker Image

	on:
	push:
	# Publish `master` as Docker `latest` image.
	branches:
	- master

	# Publish `v1.2.3` tags as releases.
	tags:
	- v*

	# Run tests for any PRs.
	pull_request:

	env:
	IMAGE_NAME: master

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-java@v1
	with:
	java-version: 1.8
	- run: ./gradlew build
	- uses: actions/upload-artifact@v1
	with:
	name: jar
	path: build/libs

	# Push image to GitHub Packages.
	# See also https://docs.docker.com/docker-hub/builds/
	push:
	# Ensure build job passes before pushing image.
	needs: build
	runs-on: ubuntu-latest
	if: github.event_name == 'push'
	steps:
	- uses: actions/checkout@v2
	- uses: actions/download-artifact@v4.1.7
	with:
	name: jar
	- run: docker build --build-arg artifact_name=spring-boot-react-gradle-kotlin.jar --file Dockerfile --tag $GITHUB_SHA .

	- run: echo "${{ secrets.GITHUB_TOKEN }}" \| docker login docker.pkg.github.com -u ${{ github.actor }} --password-stdin

	- run: \|
	IMAGE_ID=docker.pkg.github.com/${{ github.repository }}/$IMAGE_NAME

	# Change all uppercase to lowercase
	IMAGE_ID=$(echo $IMAGE_ID \| tr '[A-Z]' '[a-z]')

	# Strip git ref prefix from version
	VERSION=$(echo "${{ github.ref }}" \| sed -e 's,./$.$,\1,')

	# Strip "v" prefix from tag name
	[[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION \| sed -e 's/^v//')

	# Use Docker `latest` tag convention
	[ "$VERSION" == "master" ] && VERSION=latest

	echo IMAGE_ID=$IMAGE_ID
	echo VERSION=$VERSION

	docker tag $GITHUB_SHA $IMAGE_ID:$VERSION
	docker push $IMAGE_ID:$VERSION

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