In the preceding recipe, we saw an example of how Docker can be used for testing in a local Dev and QA environment. Let's look at an end-to-end example to see how Docker is now used in CI/CD environments. In this recipe, we'll see how we can use Shippable (https://www.shippable.com) to perform CI/CD and deploy it on Heroku (https://www.heroku.com).
Shippable is a SaaS platform that lets you easily add Continuous Integration/Deployment to your GitHub and Bitbucket (Git) repositories, and is completely built on Docker. Shippable uses build minions, which are Docker-based containers, to run workloads. Shippable supports many languages, such as Ruby, Python, Node.js, Java, Scala, PHP, Go, and Clojure. The default build minions are of Ubuntu 14.04 LTS and Ubuntu 16.04. They have also added support to use custom images from Docker...
