docker-tutorial

A environment and series of examples to learn about docker.

To participate in the tutorial you need

1. a laptop with

• 1-2GB of free RAM
• 5GB of free disk space in your home directory

1. To have performed the setup steps below.

Find videos on-line

This tutorial was presented to the Kitchener Waterloo Ruby MeetUp. You can find videos here of that presentation and follow along.

• Part 1
• Part 2
• Part 3
• Part 4

You MUST do the following before you arrive to your tutorial session

• Install Virtual Box if you don't already have it

You can get there here

    https://www.virtualbox.org/wiki/Downloads

• Install docker-machine
  

You ONLY need docker-machine, not the completion scripts. You find the installation steps for your platform here.

   https://docs.docker.com/machine/install-machine/

• Run the following commands to prepare your laptop

 docker-machine create --driver virtualbox tutorial
 docker-machine ssh tutorial curl --silent -L  https://raw.githubusercontent.com/timdaman/docker-tutorial/master/setup_lab.sh \| sh
 docker-machine stop tutorial

The reason why I asking you to do this work ahead of time is because

• I am going to dive straight into using Docker rather than wasting a lot of time showing how to install it. If you are not prepared you will fall behind.
• In a busy class if everyone tried to download the needed files for the example there is a high risk that the network would collapse under the combined demand. These prep steps caches almost all the data you need to follow along.
• This give you a chance to deal with any installation problems before coming to tutorial.

Outline

1. review of terms
   image
   layers
   containers
2. Basic docker commands
   images
   pull
   Reuse of layers
   run
   ps
   exec
   rm
   rmi
3. Playing with a container
   getting a bash shell
   copying files in and out if containers
   mounting volumes
4. Our first dockerfile
   Making a mysql Dockerfile
   exposing to network
5. Second docker file
   Install our app
   Explore networking and dns
6. Bring it all together
   Introduce compose
   Private networks