Refactor (and re-apply) generate-repo-stub-readme.sh

[yosifkit]

The migration of the new "meta" jobs out of "work-in-progress" (docker-library/meta-scripts#94 docker-library/meta-scripts#95) has reminded me that we need to finally delete the multiarch jobs on Jenkins. And once we do that, then the badges will stop working. They are currently not providing value since the multiarch jobs are unused. We do not have a 1 for 1 replacement since the new jobs are not per-repo, but strictly per-arch only. I guess the put-shared badge will still be correct for now.

So, this issue is to make a choice with the code in generate-repo-stub-readme.sh and then apply it to all of our image-specific repos:

docs/generate-repo-stub-readme.sh

Lines 66 to 140 in 53e5d3b

	badges=()
	n=$'\n'
	t=$'\t'
	branch='master'
	toTest=(
	# "image badge URL"
	# "image badge link/href"
	# "badge test URL (to determine whether badge applies)"
	"https://img.shields.io/github/actions/workflow/status/$githubRepoName/ci.yml?branch=$branch&label=GitHub%20CI"
	"https://github.com/$githubRepoName/actions?query=workflow%3A%22GitHub+CI%22+branch%3A$branch"
	"https://github.com/$githubRepoName/blob/$branch/.github/workflows/ci.yml"
	"https://img.shields.io/jenkins/s/https/doi-janky.infosiftr.net/job/update.sh/job/$repo.svg?label=Automated%20update.sh"
	"https://doi-janky.infosiftr.net/job/update.sh/job/$repo/"
	"https://doi-janky.infosiftr.net/job/update.sh/job/$repo/"
	)
	_wget_spider() {
	wget -q -o /dev/null -O /dev/null --spider "$@"
	}
	set -- "${toTest[@]}"
	while [ "$#" -gt 0 ]; do
	image="$1"; shift
	url="$1"; shift
	testUrl="$1"; shift
	if _wget_spider "$testUrl"; then
	badges+=( "-${t}[]($url)" )
	fi
	done
	arches="$(bashbrew cat --format '{{ range .Entries }}{{ join "\n" .Architectures }}{{ "\n" }}{{ end }}' "https://github.com/docker-library/official-images/raw/master/library/$repo" | sort -u)"
	if [ -n "$arches" ]; then
	archTable=
	i=0
	for arch in $arches put-shared; do
	if [ "$arch" = 'put-shared' ]; then
	jenkinsJob="job/put-shared/job/light/job/$repo"
	if ! _wget_spider "https://doi-janky.infosiftr.net/$jenkinsJob/"; then
	jenkinsJob='job/put-shared/job/heavy'
	fi
	else
	jenkinsJob="job/multiarch/job/$arch/job/$repo"
	fi
	jenkinsLink="https://doi-janky.infosiftr.net/$jenkinsJob/"
	jenkinsImage="https://img.shields.io/jenkins/s/https/doi-janky.infosiftr.net/$jenkinsJob.svg?label=$arch"
	if _wget_spider "$jenkinsLink"; then
	archTable="${archTable:-|} []($jenkinsLink) |"
	(( i = (i + 1) % 4 )) || : # modulo here needs to match the number of colums used below
	if [ "$i" = 0 ]; then
	archTable+="${n}|"
	fi
	fi
	done
	if [ -n "$archTable" ]; then
	if [ "${#badges[@]}" -gt 0 ]; then
	badges+=( '' )
	fi
	badges+=( "| Build | Status | Badges | (per-arch) |${n}|:-:|:-:|:-:|:-:|${n}${archTable%${n}|}" )
	fi
	fi
	if [ "${#badges[@]}" -gt 0 ]; then
	IFS=$'\n'
	cat <<-EOREADME
	---
	${badges[*]}
	EOREADME
	unset IFS
	fi

[tianon]

IMO we should just remove all of these -- the GitHub ones give a false sense of "status" (they're only useful to maintainers/contributors), and the rest don't have a direct analog in the new system. 😅