Docker Environment Substitution with Dockerfile

The 12 Factor [https://12factor.net/] way, is a general guideline that provides best practices when building applications. One of them is using environment variables to store application configuration. What will we be doing: In this post we will build

Setup a 3 Node Docker Swarm on Ubuntu 16

In this guide we will go through the steps on setting up a 3 node Docker Swarm. For more detailed information, and setting up a scalable application have a look at this post [http://sysadmins.co.za/docker-swarm-getting-started-with-a-3-node-docker-swarm-cluster-with-a-scalable-app/] Getting Started:

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