Revert "Use ubuntu from official images (#63)" #63

	---
	name: Check Shasums

	on: [pull_request]

	jobs:
	shasum:
	name: Check images are ok
	runs-on: ubuntu-latest

	steps:
	# Checks out a copy of your repository on the ubuntu-latest machine
	- name: Checkout code
	uses: actions/checkout@v4
	with:
	# Make sure the actual branch is checked out when running on PR
	ref: ${{ github.event.pull_request.head.sha }}
	# Full git history needed to get proper list of changed files
	fetch-depth: 0

	# Installs yq
	- name: Install yq
	run: \|
	sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys CC86BB64
	sudo add-apt-repository -y ppa:rmescandon/yq
	sudo apt update
	sudo apt install -y -q yq

	# Runs the Super-Linter action
	- name: Calculate the sum for new images
	run: \|
	for f in $(git diff --name-only ${{ github.event.pull_request.base.sha }} \| grep "appdb.*\.yaml")
	do
	[ -e "$f" ] \|\| continue
	echo "Testing $f"
	url=$(yq eval .appdb.url "$f")
	curl -I "$url" \|\| exit 1
	# now download and shasum
	sha_url=$(curl -s "$url" \| sha512sum \| cut -f1 -d"-" \| tr -d "[:space:]")
	sha_appdb=$(yq eval .appdb.sha512 "$f")
	if [ "$sha_url" != "$sha_appdb" ]
	then
	echo "SHA SUM does not match $sha_url $sha_appdb!"
	# don't try to download anything else
	exit 1
	fi
	done

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