In this chapter, we will learn about the Docker Compose tool, a key component of any Docker environment. Using Docker Compose, we can manage multi-container applications, and all the actions and functionalities we usually use to manage a container-based application will be made available in multi-container environments by Docker Compose. We are able to build all the required images for a project at once. There is no need to build, pull/push, and execute containers one by one. We can declare all the pieces, along with their interconnections, storage, environments, and so on, in a single file. We are also able to debug multi-container applications from a single endpoint, which is vital when you have many separate elements running on production environments.
But this is not just a tool. Docker Compose declares a new type of file, docker-compose...