Dokku Grunt

.npmrc

unsafe-perm = true

Gemfile

source "https://rubygems.org"

gem 'compass', ">= 1.0.0.alpha.20"
gem 'sass', ">=3.3.6"

package.json

{
  "scripts": {
    "bundler": "bundle install",
    "bower": "./node_modules/bower/bin/bower install --allow-root",
    "grunt": "./node_modules/grunt-cli/bin/grunt build",
    "postinstall": "npm run bundler && npm run bower && npm run grunt"
  }
}

Procfile

web: node web.js

web.js

var express = require('express');
var app = express();

app.use(express.static(__dirname + '/dist'));
app.listen(process.env.PORT || 5000);