Adds CI. #22

	name: Map Generation CI

	on:
	push:
	branches:
	- main
	pull_request:
	workflow_dispatch:

	# Cancel previously running PR jobs
	concurrency:
	group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label \|\| github.head_ref \|\| github.ref }}'
	cancel-in-progress: true

	jobs:
	Map:
	name: Verify Map Generation
	runs-on: ubuntu-latest
	container:
	image: ubuntu:20.04
	steps:
	- name: Install prereqs
	run: \|
	apt-get update
	apt-get install -y git python3-pip python3-empy
	- name: Extract branch name
	shell: bash
	run: echo "branch=${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}" >> $GITHUB_OUTPUT
	id: extract_branch
	- name: Clone repo and checkout branch
	run: \|
	git clone -b ${{ steps.extract_branch.outputs.branch }} https://github.com/maliput/maliput_xodr.git .
	- name: Git setup
	run: \|
	git config --global --add safe.directory /__w/maliput_xodr/maliput_xodr
	- name: Install requirements
	run: \|
	pip3 install -r requirements.txt
	- name: Generate maps
	run: \|
	bash tools/update_resources.sh
	- name: Output git status
	run: \|
	git status
	- name: Output git diff
	run: \|
	git diff
	- name: Check for changes
	id: check_for_changes
	run: \|
	if ! git diff-index --quiet HEAD; then
	echo "changes_exist=true" >> $GITHUB_OUTPUT
	- name: Debug changes
	if: steps.check_for_changes.outputs.changes_exist == 'true'
	run: \|
	git diff
	- name: Report changes
	if: steps.check_for_changes.outputs.changes_exist == 'true'
	run: \|
	echo "Changes detected in map generation. Please run tools/update_resources.sh and commit the changes."
	exit 1

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