Add git to Dockerfile. #3

	name: 'Docker Build (Ubuntu)'

	on: [push]

	#on:
	# push:
	# paths:
	# - 'containers/Dockerfile'

	jobs:
	build-apptainer-image:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest]
	max-parallel: 5
	steps:
	- uses: actions/checkout@v4
	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3
	- name: Build Test Docker Image
	uses: docker/build-push-action@v5
	with:
	context: "{{defaultContext}}:containers"
	push: false
	tags: ${{ env.TEST_TAG }}
	- name: Test Docker
	run: \|
	docker run --rm ${{ env.TEST_TAG }}

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