This document provides an introduction and overview of Docker. It discusses what Docker is, the underlying technologies that power it such as Linux containers and AUFS filesystem, how it compares to virtual machines, how to install and try Docker, examples uses cases, the Docker ecosystem and community, and links for additional information. The presentation was given by Steve Domin in London in October 2013.

1. Introduction to
Steve Domin
Docker London Oct 2013

2. Quick Survey
• have heard of Docker ?
• have tried Docker ?
• are using Docker in a project ?
How many of you :

3. The challenge

4. Let’s make an analogy

5. The solution

6. What is Docker?
Docker is an engine that automates the
deployment of any application as a lightweight,
portable, self-sufficient container that will run
virtually anywhere.

7. Underlying technologies
• Linux Containers a.k.a LXC
• Control groups and namespaces
• AUFS, a copy-on-write filesystem

8. Containers vsVMs

9. Installing Docker
• What you need:
• Linux Kernel 3.8 or above
• AUFS
• LXC
• Vagrant, APT repo, binary download, from
source
• http://docs.docker.io/en/latest/installation/

10. Try Docker on DigitalOcean
Register here http://tinyurl.com/dockerLDN
with the promo code DockerInLondon
for a $10 credit bonus

11. Docker on OS X
• LaunchVagrant box with docker
• Build docker on OS X
• Alias docker to docker -H :4243

12. Demo

13. Use cases
• Build a PaaS
• Easy, automated application development
• Local dev environment
• Testing

14. Docker ecosystem
• PaaS: dokku, flynn.io, deis, tsuru
• Orchard
• StriderCD
• UI’s (shipyard, docker-ui, dockland)
• CoreOS

15. Cool projects
• http://memcachedasaservice.com
• http://tryrethink.info
• https://github.com/ptone/jiffylab

16. Who’s playing with it
• Cloudflare
• eBay
• mailgun
• (GoCardless)

17. Docker 1.0
• Designed to be pluggable
• LXC, Solaris Zones, BSD Jails, OpenVZ
• AUFS, BTRFS
• Read more about this: http://
blog.docker.io/2013/08/getting-to-
docker-1-0/

18. Useful links
• http://docker.io
• Docs: http://docs.docker.io/
• IRC: #docker on freenode
• Google group: docker-user
• Twitter: @docker
• G+: Docker+

19. Thanks!
@stevedomin
(I’ve a limited amount of Docker stickers to give away)