Book Image

Continuous Delivery with Docker and Jenkins - Second Edition

By : Rafał Leszko
Book Image

Continuous Delivery with Docker and Jenkins - Second Edition

By: Rafał Leszko

Overview of this book

Continuous Delivery with Docker and Jenkins, Second Edition will explain the advantages of combining Jenkins and Docker to improve the continuous integration and delivery process of an app development. It will start with setting up a Docker server and configuring Jenkins on it. It will then provide steps to build applications on Docker files and integrate them with Jenkins using continuous delivery processes such as continuous integration, automated acceptance testing, and configuration management. Moving on, you will learn how to ensure quick application deployment with Docker containers along with scaling Jenkins using Kubernetes. Next, you will get to know how to deploy applications using Docker images and testing them with Jenkins. Towards the end, the book will touch base with missing parts of the CD pipeline, which are the environments and infrastructure, application versioning, and nonfunctional testing. By the end of the book, you will be enhancing the DevOps workflow by integrating the functionalities of Docker and Jenkins.
Table of Contents (18 chapters)
Title Page
Dedication
About Packt
Contributors
Preface
Index

Building images


In this section, we will see how to do this using two different methods: the Docker commit command and the Dockerfile automated build.

Docker commit

Let's start with an example and prepare an image with the Git and JDK toolkit. We will use Ubuntu 18.04 as a base image. There is no need to create it; most base images are available in the Docker Hub registry:

  1. Run a container from ubuntu:18.04 and connect it to its command line:
        $ docker run -i -t ubuntu:18.04 /bin/bash

We've pulled the ubuntu:18.04 image, run it as a container, and then called the /bin/bash command in an interactive way (-i flag). You should see the Terminal of the container. Since containers are stateful and writable, we can do anything we want in its Terminal.

  1. Install the Git toolkit:
        root@dee2cb192c6c:/# apt-get update
        root@dee2cb192c6c:/# apt-get install -y git
  1. Check whether the Git toolkit is installed:
        root@dee2cb192c6c:/# which git
        /usr/bin/git
  1. Exit the container:
      ...