We are in the world of developing applications using multiple languages, frameworks, architectures for each life cycle stage which creates enormous complexity. There is an urge to do container-based deployment. Spring Boot and Docker together is a great combo to develop a RESTful web service application. In this article, I will try to explain:
- Docker and its benefits.
- Creating a Spring Boot Application.
- Hosting the Spring Boot Application in Docker.
Docker
Docker is an open-source technology used mostly for developing, shipping and running applications. The brilliance of Docker is that, once you package an application and all its dependencies into a Docker container, you ensure it will run in any environment. A Docker container image is a lightweight, standalone, executable package of software that has everything you need to run an application. For example, the creation of a Java application requires Java libraries, and when we deploy it on any system or VM, we need to install Java first. But, in a container, everything is kept together and shipped as one package, such as in a Docker container. Read the documentation for more information about Docker containers.