In the previous lab, you created a simple command line utility and were able to containerize it with Docker. This lab will cover advanced topics of containerizing Go applications. In this lab, you'll containerize a simple web server application. This web server uses Go modules to handle dependencies and you'll learn how to manage them when building a Docker image. You'll also learn about the Docker multi-stage build pattern, and how to expose ports when running a Docker image.

Learning Objectives

Upon completion of this lab you will be able to:

• Add third party libraries to Go source code using Go modules
• Write a Dockerfile capable of managing third-party libraries in a Go application
• Build the Docker image
• Refactor the Dockerfile to use a multi-stage build architecture, and leverage Docker build caching

Intended Audience

This lab is intended for:

• Developers, especially those working with Go
• Anyone leveraging containers

Prerequisites

You should possess:

• Basic understanding of the Go programming language
• Understanding of the Linux command line
• Conceptual understanding of Docker

The following content is sufficient to fulfill these prerequisites:

• The Introduction to the Go Programming Language course
• The Linux Command Line Byte Session learning path
• The Introduction to Docker course

Updates

August 17th, 2021 - Addressed an issue and clarified some instructions