Adding DRAWIO_SERVER_URL new variable #156

	name: Docker Image CI

	on:
	push:
	branches:
	- master
	tags:
	- 'v*'
	schedule:
	- cron: "05 04 * * 1"

	jobs:
	build:
	runs-on: ubuntu-latest
	env:
	REPO: jgraph/drawio
	HTTP_PORT: 32733
	HTTPS_PORT: 32734
	DOCKER_USER: ${{ secrets.DOCKER_USER }}
	DOCKER_PASS: ${{ secrets.DOCKER_PASS }}
	steps:
	- name: Set up QEMU
	uses: docker/setup-qemu-action@v2
	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v2
	- uses: actions/checkout@v3
	- name: Build Docker image
	run: \|
	# Get draw.io current latest version
	wget https://raw.githubusercontent.com/jgraph/drawio/master/VERSION
	export VERSION=`cat VERSION`
	echo "${DOCKER_PASS}" \| docker login -u "${DOCKER_USER}" --password-stdin;
	export GIT_BRANCH=`echo $GITHUB_REF \| awk 'BEGIN { FS = "/" } ; { print $3 }'`
	export TAG=`if [ "$GIT_BRANCH" == "v${VERSION}" ] \|\| [ "$GIT_BRANCH" == "master" ]; then echo "latest"; else echo $GIT_BRANCH ; fi`
	docker buildx build --platform linux/amd64,linux/arm64 -f main/Dockerfile -t ${REPO}:${VERSION} -t ${REPO}:$TAG --push main/
	#With platform build, the images are not stored locally, so we test the image after pushing it
	docker run --name "drawio" -d -p ${HTTP_PORT}:8080 -p ${HTTPS_PORT}:8443 ${REPO}:${VERSION}
	sleep 10
	docker logs drawio
	docker exec drawio /bin/bash -c "curl -i http://localhost:8080"

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