Ensure tailwindcss runs via bundler

* using binstub via bundle exec:

    bundler binstub tailwindcss-ruby

Co-authored-by: Maciej Korsan <[email protected]>

Makefile

@@ -5,11 +5,11 @@ nanoc: ## Nanoc live preview
 	@env bin/nanoc live -L -e development
 
 css: ## Compile CSS
-	@tailwindcss -i ./content/main.css -o ./output/main.css --watch
+	@./bin/tailwindcss -i ./content/main.css -o ./output/main.css --watch
 
 build: ## Production build
 	@./bin/nanoc compile -e production
-	@tailwindcss -i ./content/main.css -o ./output/main.css --minify
+	@./bin/tailwindcss -i ./content/main.css -o ./output/main.css --minify
 
 setup: ## Install dependencies
 	@bundle install

bin/tailwindcss

@@ -0,0 +1,27 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+#
+# This file was generated by Bundler.
+#
+# The application 'tailwindcss' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
+
+bundle_binstub = File.expand_path("bundle", __dir__)
+
+if File.file?(bundle_binstub)
+  if File.read(bundle_binstub, 300).include?("This file was generated by Bundler")
+    load(bundle_binstub)
+  else
+    abort("Your `bin/bundle` was not generated by Bundler, so this binstub cannot run.
+Replace `bin/bundle` by running `bundle binstubs bundler --force`, then run this command again.")
+  end
+end
+
+require "rubygems"
+require "bundler/setup"
+
+load Gem.bin_path("tailwindcss-ruby", "tailwindcss")