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

Using Docker Compose with Travis

Travis is a YAML-based CI/CD solution. It does provide source code hosting, but it is very well integrated with GitHub. Travis used to provide free CI/CD for open source projects, so it is very common to work on an open source project that uses Travis. The same steps we followed in the previous CI/CD vendors will also be applied to Travis.

Creating your first Travis job

Travis is YAML-based just like the previous CI/CD tools we examined. Once we enabled Travis integration with a GitHub project, a file named .travis.yml containing the job instructions needs to be present at the root location of the project.

Our.travis.yml base should be the following:

services:
  - docker
 
cache:
  directories:
    - $HOME/.docker/cli-plugins
 
jobs:
  include:
    - stage: "Install Compose"
      script:
      ...