test: fix missing conf file at markdownlint

.markdownlint.json

@@ -0,0 +1,8 @@
+{
+  "default": true,
+  "line-length": false,
+  "MD001": false,
+  "MD024": false,
+  "MD033": { "allowed_elements": ["a", "p", "img"] },
+  "MD041": false
+}

.markdownlintignore

@@ -0,0 +1 @@
+node_modules

tests/static/test_helper/static.bash

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+function print_errors() {
+  for line in "${lines[@]}"; do
+    echo "$line"
+  done
+}
+
+function shellcheck_test() {
+  shellcheck_url="https://github.com/koalaman/shellcheck"
+
+  which shellcheck > /dev/null || {
+    echo "shellcheck not found, please install: $shellcheck_url"
+    exit 1
+  }
+
+  scripts=$(find . -name '*.sh' -name '*.bash')
+  for script in $scripts; do
+    shellcheck "$script"
+  done
+}