upgrade packages in a11y image and add codeserver to check their a11y extension #2

	name: Build and test container image

	on:
	pull_request:

	jobs:
	test-build:
	runs-on: ubuntu-latest
	env:
	DOCKER_CONFIG: $HOME/.docker
	steps:
	- name: cleanup disk space
	run: \|
	sudo rm -rf /usr/local/lib/android /usr/share/dotnet /opt/ghc
	df -h

	- name: Checkout files in repo
	uses: actions/checkout@v4

	- name: See if the image config changed
	id: changed-files
	uses: tj-actions/changed-files@v44
	with:
	files_ignore: \|
	.github/**
	images/**

	- name: What files changed?
	if: steps.changed-files.outputs.any_changed == 'true'
	env:
	CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
	run: \|
	echo "One or more image file(s) has changed:"
	echo "$CHANGED_FILES"

	- name: Build and test the image if any image file(s) changed
	if: steps.changed-files.outputs.any_changed == 'true'
	uses: jupyterhub/repo2docker-action@master
	with:
	REPO_DIR: /srv/repo
	NO_PUSH: true

	# Lets us monitor disks getting full as images get bigger over time
	- name: Show how much disk space is left
	run: df -h

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