Book Image

A Developer's Essential Guide to Docker Compose

By : Emmanouil Gkatziouras
Book Image

A Developer's Essential Guide to Docker Compose

By: Emmanouil Gkatziouras

Overview of this book

Software development is becoming increasingly complex due to the various software components used. Applications need to be packaged with software components to facilitate their operations, making it complicated to run them. With Docker Compose, a single command can set up your application and the needed dependencies. This book starts with an overview of Docker Compose and its usage and then shows how to create an application. You will also get to grips with the fundamentals of Docker volumes and network, along with Compose commands, their purpose, and use cases. Next, you will set up databases for daily usage using Compose and, leveraging Docker networking, you will establish communication between microservices. You will also run entire stacks locally on Compose, simulate production environments, and enhance CI/CD jobs using Docker Compose. Later chapters will show you how to benefit from Docker Compose for production deployments, provision infrastructure on public clouds such as AWS and Azure, and wrap up with Compose deployments on said infrastructure. By the end of this book, you will have learned how to effectively utilize Docker Compose for day-to-day development.
Table of Contents (19 chapters)
1
Part 1: Docker Compose 101
6
Part 2: Daily Development with Docker Compose
12
Part 3: Deployment with Docker Compose

Creating a core application

In this section, we will create an application using the Go programming language. Throughout the course of this book, this application will evolve and will help us display the features that Compose offers. Go is an open source programming language. Many software applications that we use nowadays are built using Go, including Docker, Kubernetes, and Compose. By programming using Go, we benefit from a robust library providing packages that we need such as http server, testing utils, and more.

Installing Go

Installing Go on your workstation is streamlined. By navigating to the download page on https://go.dev/doc/install, you can find installation packages for the major operating systems.

A REST API in Go using Gin

Building a REST API in Go can be done either by using the existing libraries or by using a framework. We will pick the framework option in order to keep our code base simple and keep our focus on Compose. The framework we will use is Gin...