Book Image

The Docker Workshop

By : Vincent Sesto, Onur Yılmaz, Sathsara Sarathchandra, Aric Renzo, Engy Fouda
5 (3)
Book Image

The Docker Workshop

5 (3)
By: Vincent Sesto, Onur Yılmaz, Sathsara Sarathchandra, Aric Renzo, Engy Fouda

Overview of this book

No doubt Docker Containers are the future of highly-scalable software systems and have cost and runtime efficient supporting infrastructure. But learning it might look complex as it comes with many technicalities. This is where The Docker Workshop will help you. Through this workshop, you’ll quickly learn how to work with containers and Docker with the help of practical activities.? The workshop starts with Docker containers, enabling you to understand how it works. You’ll run third party Docker images and also create your own images using Dockerfiles and multi-stage Dockerfiles. Next, you’ll create environments for Docker images, and expedite your deployment and testing process with Continuous Integration. Moving ahead, you’ll tap into interesting topics and learn how to implement production-ready environments using Docker Swarm. You’ll also apply best practices to secure Docker images and to ensure that production environments are running at maximum capacity. Towards the end, you’ll gather skills to successfully move Docker from development to testing, and then into production. While doing so, you’ll learn how to troubleshoot issues, clear up resource bottlenecks and optimize the performance of services. By the end of this workshop, you’ll be able to utilize Docker containers in real-world use cases.
Table of Contents (17 chapters)
Preface

Integrating GitHub and Jenkins

After installing Jenkins, we will create our first job and integrate it with GitHub. In this section, as in Figure 8.8, we will focus solely on GitHub and Jenkins. Docker Hub will be discussed a little later.

Figure 8.8: Integrating GitHub and Jenkins

We will use a simple Python application to count the number of hits on a website. Every time you refresh the page, the counter will increment, resulting in an increase in the number of hits on the website.

Note

The code files for the Getting Started application can be found at the following link: https://github.com/efoda/hit_counter.

The application consists of four files:

  • app.py: This is the Python application code. It uses Redis to keep track of the counts of the number of hits on a website.
  • requirments.txt: This file contains the dependencies needed for the application to work properly.
  • Dockerfile: This builds the image with the required libraries...