Modern containerised 12 factor applications are expected to derive their configuration from environment variables. While Spring Boot does import some of its properties from environment variables, it doesn’t for most of its common properties.
An oft-repeated and sensible principle in software engineering is DRY, or “don’t repeat yourself”. Here we will apply this principle to Docker compose files.
Spring Boot is a very popular Java framework for creating standalone, production ready web applications. In this series of blog posts, we are going to walk through using Spring Boot 2.0 to build and deploy a simple CRUD REST application.