Deploy with Docker: Single-node deployment of Rails API application on VPS

In this episode, we will learn how to set up an application environment (single-node stack) in a cloud using docker-machine and deploy rails API application with docker & docker-compose.

Rails API application that we are going to deploy is the one I wrote in Episode #4

Following are the steps to walk through,

1. Prepare the Rails API application for deployment
2. Create a repository on canister.io for the API application images
3. Create a docker-compose for the new deployment environment
4. Provision a new app server machine (droplet) on digital-ocean using docker-machine
5. Deploy with docker-compose and test