This workshop is based on the Docker 101 Tutorial, created by Docker and others. I wanted to focus on different aspects hence the fork.

For this workhop I used the original Docker 101 Todo app and a great deal of the original texts from the Docker 101 Github repo. A big thanks to Docker, Inc. for placing their work under an Apache 2.0 license.

Objectives

In this workshop, you will learn some Docker or Container basics, like:

• Creating a Dockerfile
• Creating a container image
• Starting a container
• Container networking
• Mounting external “volumes” onto containers
• A little bit about docker-compose

Prerequisites

• git
• Docker

Docker can be Docker CE for Linux or Docker Desktop for Mac, Windows, or Linux. We will not cover installation of Docker (Desktop) in this workshop.

Note: bwLehrpool has all the required software installed. Change into the PERSISTENT directory before cloning the repository in the next step.

We are going to deploy a ToDo app based on Node.js. It can run “stand-alone” using a built in SQLite database or it can connect with a external MySQL database.

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Table of contents

• Deploy ToDo stand-alone
• Update the app, build a new image
• Persisiting the data, Volumes
• Add MySQL DB, Multi-Container apps
• Image Building Best Practises
• Docker Compose
• Tips and useful commands