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

Introducing Docker Compose and its usage

Docker Compose is a tool for defining and running multi-container Docker applications. The configuration is achieved using YAML files, and through the Docker Compose CLI utility, we can provision and perform operations on the containers managed by Docker Compose.

Here is a list of features that Compose offers:

  • Complex multi-container applications on a single host
  • The isolation of Docker workloads
  • Bootstrapping and the distribution of complex applications
  • Multiple environments
  • The ability to preserve data on application change
  • The ability to update application versions
  • Environment composition
  • Reusable configurations
  • The simulation of complex production environments
  • The deployment of production applications

In this book, we will dive into the preceding features extensively, evaluate how we can benefit from them, and incorporate them into our development process. In the next section, we will install Docker and Compose on our workstation using the operating system of our choice.