Heard about Docker and are wondering how to make it part of your stack? Excited by the potential of developing faster and smarter? We’re going to show you how to build development environments with Docker. Then teach you how to integrate that environment into your development and testing workflow. We’ll show you how to easily install Docker on Linux, OS X and Windows and how to manage it. You’ll learn how to build replicas of your production stack to develop in. We’ll demonstrate some simple Docker-enabled workflows that include local development, Git Hub integration, and container-based testing. You’ll get an introduction to taking the next step and leveling up your local workflow to a group or team-centric continuous integration environment with Jenkins. You’ll leave the session with the basic tools to add Docker to your development lifecycle and information about how to learn more to build on your knowledge.

1. Docker for Developers
Containerization is the new virtualization
James Turnbull
@kartar
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2. who
• VP of Engineering at Kickstarter
• Advisor at Docker
• Open source chap
• Funny accent
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3. The Docker Book
www.dockerbook.com
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4. Who are you folks?
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5. What's this all about?
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6. What is Docker?
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7. Container
virtualization
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8. Build, ship, run
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9. Build once
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10. Run in many places
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11. Isolated
Layered
Standard
Content agnostic
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12. So why should I care?
Software delivery mechanism
Portability
A bit like a VM but ...
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13. ... not like a VM
1. Containers boot faster
2. Containers have less overhead
3. Containers bring native performance
4. Containers are Cloud & VM-compatible
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14. Devs care about their
app
Ops cares about the
containers
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15. Why developers care...
• Clean, safe, hygienic and portable
• No worries about dependencies
• Encourage good architecture
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16. Why operations care...
• Make the lifecycle more efficient
• Eliminate inconsistencies
• Support segregation of duties
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17. What can I use Docker for?
• Docker for CI/CD
• Packaging and deploying applications
• Build your own PAAS
• Deploy applications at hyperscale!
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18. Technology Stack
• Runs on most Linux distributions
• Boot2Docker for OSX and Windows
• Windows in the works!
• Uses Linux kernel features
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19. Docker Basics
Image & Dockerfile
Container
The Docker Hub
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20. Building Docker images
FROM ubuntu
MAINTAINER James Turnbull "james@example.com"
RUN apt-get -qqy update
RUN apt-get install -qqy apache2
ADD index.html /var/www/
ENV APACHE_RUN_USER www-data
ENV APACHE_RUN_GROUP www-data
ENV APACHE_LOG_DIR /var/log/apache2
VOLUME [ "/var/log/apache2" ]
EXPOSE 80
ENTRYPOINT ["/usr/sbin/apache2"]
CMD ["-D", "FOREGROUND"]
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21. Building the image
$ sudo docker build -t="jamtur01/fluentconf" .
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22. Sharing the image
$ sudo docker push jamtur01/fluentconf
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23. Running the container
$ sudo docker run --name mywebsite -ti -p 80:80 jamtur01/fluentconf
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24. Docker Hub
• Like GitHub but for containers.
• Integrates with GitHub and BitBucket.
• Web hooks for integration with other services.
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25. Workflow
• Write awesome code!
• Commit code.
• (Automatically) build Docker images
• Share images
• Profit!
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26. But it's not simple to
build a stack
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27. Docker Compose
• Fast, isolated development environments using Docker.
• Quick and easy to start.
• Manages a collection of containers.
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28. Installing Compose
$ sudo pip install -U docker-compose
$ docker-compose --version
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29. Compose basics
• Build your apps with Dockerfile's.
• Combine applications and images with a docker-
compose.yml file.
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30. The Dockerfile
FROM ubuntu:14.04
RUN apt-get -yqq update
RUN apt-get -yqq install nodejs npm
RUN ln -s /usr/bin/nodejs /usr/bin/node
RUN mkdir -p /var/log/nodeapp
ADD nodeapp /opt/nodeapp/
WORKDIR /opt/nodeapp
RUN npm install
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31. The docker-compose.yml file
db:
image: redis
ports:
- "6379"
web:
image: jamtur01/fluentdemo
command: nodejs server.js
ports:
- "3000:3000"
links:
- db
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32. Compose details
• Can build images, use existing or pull images
• Can map ports, manage links and create volumes
• Still single host centric.
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33. Start Compose
$ sudo docker-compose up
Creating compose_db_1...
Creating compose_web_1...
. . .
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34. Demo
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35. Compose benefits
• Build complex local stacks.
• Consistent and shareable.
• No more..
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36. 36

37. Team and Deployment Workflow
• Write awesome code!
• Commit code.
• (Automatically) build Docker images.
• (Automatically) run Jenkins tests.
• Promote images to new environments.
• Profit!
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38. Questions?
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