[CI] Add Jazzy (backport #503) #380

	name: Build Iron Dockerfile
	# description: builds the dockerfile contained within the repo

	on:
	pull_request:
	branches:
	- iron
	push:
	branches:
	- iron
	schedule:
	# Run every morning to detect broken dependencies
	- cron: '50 1 * * *'


	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	ref: iron
	- name: Build the Docker image
	run: docker build --file Dockerfile/Dockerfile --tag ros2_control_demos_iron --build-arg ROS_DISTRO=iron .

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