Dockerfile cleanup #49

	name: Docker Image

	# Controls when the action will run.
	on:
	# When a release is published
	release:
	types: [published]

	# Push excluding tags and workflow changes
	push:
	branches:
	- main
	tags-ignore:
	- '.'
	paths-ignore:
	- '*/.md'

	jobs:

	image_keycloak:

	env:
	PLATFORM: linux/amd64,linux/arm64

	runs-on: ubuntu-latest

	steps:
	- uses: styfle/cancel-workflow-action@0.8.0
	with:
	access_token: ${{ github.token }}

	- name: Set tags
	run: \|
	if [ -z "$TAG" ]; then
	echo "TAG=-t openremote/keycloak:develop" >> $GITHUB_ENV
	else
	echo "TAG=-t openremote/keycloak:latest -t openremote/keycloak:$TAG" >> $GITHUB_ENV
	fi
	env:
	TAG: ${{ github.event.release.tag_name }}

	- uses: actions/checkout@v2

	- name: set up JDK 1.8
	uses: actions/setup-java@v1
	with:
	java-version: 1.8

	- name: grant execute permission for gradlew
	run: chmod +x gradlew

	- name: build with Gradle
	run: ./gradlew installDist

	- name: set up QEMU
	uses: docker/setup-qemu-action@v1
	with:
	platforms: all

	- name: install buildx
	id: buildx
	uses: docker/setup-buildx-action@v1
	with:
	version: latest
	install: true

	- name: available platforms
	run: echo ${{ steps.buildx.outputs.platforms }}

	- name: Login to DockerHub
	uses: docker/login-action@v1
	with:
	username: ${{ secrets._TEMP_DOCKERHUB_USER }}
	password: ${{ secrets._TEMP_DOCKERHUB_PASSWORD }}

	- name: build and push images
	run: \|
	docker build --build-arg GIT_COMMIT=${{ github.sha }} --push --platform $PLATFORM $TAG .

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