To get the most out of this book

Ideally you have access to a laptop or personal computer with Windows 10 Professional or a recent version of Mac OS X installed. A computer with any popular Linux OS installed works too. If you're on a Mac you should install Docker for Mac and if you're on Windows then install Docker for Windows. You can download them from here: https://www.docker.com/community-edition

If you are on an older version of Windows or are using Windows 10 Home edition, then you should install Docker Toolbox. You can find the Docker Toolbox here: https://docs.docker.com/toolbox/toolbox_install_windows/

On the Mac, use the Terminal application, and on Windows, use a PowerShell console to try out the commands you will be learning. You also need a recent version of a browser such as Google Chrome, Safari or Internet Explorer. Of course you will need internet access to download tools and container images that we are going to use and explore in this book.

Download the example code files

You can download the example code files for this book from your account at www.packtpub.com. If you purchased this book elsewhere, you can visit www.packtpub.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at www.packtpub.com.
2. Select the SUPPORT tab.
3. Click on Code Downloads & Errata.
4. Enter the name of the book in the Search box and follow the onscreen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR/7-Zip for Windows
• Zipeg/iZip/UnRarX for Mac
• 7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/fundamentalsofdocker/labs. If there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

Download the color images

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it from https://www.packtpub.com/sites/default/files/downloads/LearnDockerFundamentalsofDocker18x_ColorImages.pdf.

Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "The content of each layer is mapped to a special folder on the host system, which is usually a subfolder of /var/lib/docker/."

A block of code is set as follows:

COPY . /app
COPY ./web /app/web
COPY sample.txt /data/my-sample.txt
ADD sample.tar /app/bin/
ADD http://example.com/sample.txt /data/

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

FROM python:2.7
RUN mkdir -p /app
WORKDIR /app
COPY ./requirements.txt /app/
RUN pip install -r requirements.txt
CMD ["python", "main.py"]

Any command-line input or output is written as follows:

$ mkdir ~/FundamentalsOfDocker
$ cd ~/FundamentalsOfDocker

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Select System info from the Administration panel."

Warnings or important notes appear like this.

Tips and tricks appear like this.