Update vale and start using output template

We can shrink the docker image if we don't need ruby

.gitlab/ci/docs.gitlab-ci.yml

@@ -42,7 +42,7 @@ docs-lint markdown:
   extends:
     - .default-retry
     - .docs:rules:docs-lint
-  image: "registry.gitlab.com/gitlab-org/gitlab-docs/lint:ruby-2.7.2-alpine-3.12-vale-2.4.3-markdownlint-0.24.0"
+  image: "registry.gitlab.com/gitlab-org/gitlab-docs/lint-markdown:alpine-3.12-vale-2.6.1-markdownlint-0.24.0"
   stage: test
   needs: []
   script:

doc/.vale/vale.tmpl

+{{- /* Modify Vale's output https://docs.errata.ai/vale/cli#--output */ -}}
+
+{{- /* Keep track of our various counts */ -}}
+
+{{- $e := 0 -}}
+{{- $w := 0 -}}
+{{- $s := 0 -}}
+{{- $f := 0 -}}
+
+{{- /* Range over the linted files */ -}}
+
+{{- range .Files}}
+
+{{- $f = add1 $f -}}
+{{- $path := .Path | underline -}}
+
+{{- /* Range over the file's alerts */ -}}
+
+{{- range .Alerts -}}
+
+{{- $error := "" -}}
+{{- if eq .Severity "error" -}}
+    {{- $error = .Severity | red -}}
+    {{- $e = add1 $e  -}}
+{{- else if eq .Severity "warning" -}}
+    {{- $error = .Severity | yellow -}}
+    {{- $w = add1 $w -}}
+{{- else -}}
+    {{- $error = .Severity | blue -}}
+    {{- $s = add1 $s -}}
+{{- end}}
+
+{{- /* Variables setup */ -}}
+
+{{- $path = $path -}}
+{{- $loc := printf "Line %d, position %d" .Line (index .Span 0) -}}
+{{- $check := printf "%s" .Check -}}
+{{- $message := printf "%s" .Message -}}
+{{- $link := printf "%s" .Link -}}
+
+{{- /* Output */ -}}
+
+{{ $path }}:
+ {{ $loc }} (rule {{ $check }})
+ {{ $error }}: {{ $message }}
+ More information: {{ $link }}
+
+{{end -}}
+{{end -}}
+
+{{- $e}} {{"errors" | red}}, {{$w}} {{"warnings" | yellow}}, and {{$s}} {{"suggestions" | blue}} found in {{$f}} {{$f | int | plural "file" "files"}}.

scripts/lint-doc.sh

@@ -75,14 +75,13 @@ fi
 function run_locally_or_in_docker() {
   local cmd=$1
   local args=$2
-  local pipe_cmd=$3
 
   if hash ${cmd} 2>/dev/null
   then
-    $cmd $args | $pipe_cmd
+    $cmd $args
   elif hash docker 2>/dev/null
   then
-    docker run -t -v ${PWD}:/gitlab -w /gitlab --rm registry.gitlab.com/gitlab-org/gitlab-docs/lint:latest ${cmd} ${args} | $pipe_cmd
+    docker run -t -v ${PWD}:/gitlab -w /gitlab --rm registry.gitlab.com/gitlab-org/gitlab-docs/lint:latest ${cmd} ${args}
   else
     echo
     echo "  ✖ ERROR: '${cmd}' not found. Install '${cmd}' or Docker to proceed." >&2
@@ -109,7 +108,7 @@ else
 fi
 
 echo '=> Linting prose...'
-run_locally_or_in_docker 'vale' "--minAlertLevel error --output=JSON ${MD_DOC_PATH}" "ruby scripts/vale.rb"
+run_locally_or_in_docker 'vale' "--minAlertLevel error --output=doc/.vale/vale.tmpl ${MD_DOC_PATH}"
 
 if [ $ERRORCODE -ne 0 ]
 then

scripts/vale.rb

-#!/usr/bin/env ruby
-#
-# Get the JSON output from Vale and format it in a nicer way
-# See https://gitlab.com/gitlab-org/gitlab/-/merge_requests/46725
-#
-# Usage:
-#   vale --output=JSON filename.md | ruby vale.rb
-#
-
-require 'json'
-
-input = ARGF.read
-data = JSON.parse(input)
-
-data.each_pair do |source, alerts|
-  alerts.each do |alert|
-    puts "#{source}:"
-    puts " Line #{alert['Line']}, position #{alert['Span'][0]} (rule #{alert['Check']})"
-    puts " #{alert['Severity']}: #{alert['Message']}"
-    puts " More information: #{alert['Link']}"
-    puts
-  end
-end