Introduction to Docker

A hands-on introduction to using Docker. By the end of the workshop you should be able to run Docker containers, build Docker images interactively, and use a Dockerfile to create a Docker image with code.

It covers working with Docker images and containers. It does not cover Docker installation, although if you can create an Ubuntu VM there is a script below that will install the required software.

Prerequisites

To participate, you need to have a workstation with Docker installed and you need to have access to Docker. On a Linux system, this probably means you have to be in the docker group.

If you want to use a fresh cloud image, set up an instance in AWS with a current Ubuntu AMI and then copy the install-docker.sh script to the system and run it as root (e.g., sudo bash ./install-docker.sh). On AWS, a t2.micro (1 vCPU, 1 GiB RAM) or similar is probably enough for the Docker lessons. The comments in the script explain the networking/security group requirements.

To complete the Docker Compose lesson (Lesson 5), you'll need Docker Compose installed. The install-docker.sh script handles that. The cloud instance will need to be at least a t3a.small (2 vCPU, 2 GiB RAM) instance with 12 GiB of storage to handle all the images and containers that run in that lesson.

Check that you are ready by running docker from the command line.

$ docker --version
Docker version 19.03.13, build 4484c46d9d

The exact version and build number are not critical to this workshop.

If the command works and you get a response similar to below, you are ready to proceed with Lesson 1- Our First Containers.

Good luck!