DigitalOcean has added Dokku, an open source Platform as a Service built on Docker and Heroku Build Packs, to its 1-click image selection on all Droplets. This allows developers to deploy their apps with just a git push in under a minute, supporting multiple programming languages including Ruby, Rails, Node.js, Java, and more. Dokku is fully customizable with various plugins that can be incorporated into the image, making it a free platform where cost only applies to DigitalOcean hosting plans. The addition of Dokku aims to simplify app deployment and push developers to test their apps beyond the initial launch phase.