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

Docker remote hosts

Imagine an application running locally on a machine and you want it to be accessible by another individual through a Linux machine located on the cloud for general usage. If this application is based on Docker Compose, the application can be deployed manually to the VM through shell commands. However, there is a more streamlined way to deploy this application to the target VM. Provided a server has Docker installed, it is eligible to become a Docker host. Docker gives you the ability to use the Docker capabilities of another machine, provided it has Docker installed and access to that machine has been set up.

An example of a remote host is the Docker installation on Windows and macOS. They both require a Linux VM to run Docker. The Linux VM is the remote host that the Docker CLI uses to interact with.

Now, let’s learn how to create a remote host.