To get the most out of this book

The reader should know the basics of Linux and Docker commands. Although this is optional, it would be a big plus if the reader has a basic understanding of network protocols and has some familiarity to the cloud computing concepts.

Although it is possible to use a MacBook or PC with Windows OS to run examples in this book, it is highly recommended for the reader to use Ubuntu Linux 16.04 and above. The reader with Mac book or Windows could run examples via Linux on a virtual machine, or a cloud instance.

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/PacktPublishing/Docker-for-Serverless-Applications. In case 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!

Conventions used

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

code in text: 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: "We will try the echoit function to hello world with OpenFaaS."

A block of code is set as follows:

FROM ubuntu
RUN apt-get update && apt-get install -y nginx
EXPOSE 80
ENTRYPOINT ["nginx", "-g", "daemon off;"]

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

$ curl -sSL https://get.docker.com | sudo sh
$ docker swarm init --advertise-addr=eth0

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: "The following screenshot shows the browser running OpenFaaS Portal."

Warnings or important notes appear like this.

Tips and tricks appear like this.