Example Simple NodeJS Application for Docker demo - https://gist.github.com/abtris/6aca9b2668b8b5af0208 Video - https://www.youtube.com/watch?v=p6olO6NChno&feature=youtu.be

1. Docker
Build, Ship and Run
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2. Ladislav Prskavec
4 Twitter: @abtris
4 Blog: http://blog.prskavec.net
4 Site Reliability Engineer (SRE)
in Apiary.io
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3. GDG Spaghetti Code Liberec, 6.10.2015 3

4. What's Docker?
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5. Analogy
from
logistics
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6. Goods, wares
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7. Containers
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8. Why Docker?
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9. Fast
and
scalableGDG Spaghetti Code Liberec, 6.10.2015 9

10. Build once,
run anywhere
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11. Configure once, run
anywhere
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12. Example of using Docker
4 build documentation in Sphinx with latex
support
4 executing code in many different
programming languages without requiring
a single compiler or script interpreter on
your machine - docker exec
4 running gui app in docker at linux
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13. Example of using Docker
4 development without install ing many
tools at local machine
4 Vagrant, Otto dev
4 continues integration using docker
4 Jenkins, TravisCI, CircleCI
4 DevOps platform for build, deploy and
manage apps across any cloud - Tutum
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14. Docker Engine
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15. Docker Engine
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16. VM vs Docker
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17. Containers and images
docker run hello-world
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18. Docker Remote API
4 client & server in Docker
4 docker ps
4 docker build
4 docker push/pull
4 docker run/stop
4 docker inspect
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19. Docker lifecycle
4 a build produces an immutable image
4 a container is as instance of the image
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20. Docker lifecycle
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21. Container lifecycle
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22. Dockerfile
# Firefox over VNC
#
# VERSION 0.3
FROM ubuntu
# Install vnc, xvfb in order to create a 'fake' display and firefox
RUN apt-get update && apt-get install -y x11vnc xvfb firefox
RUN mkdir ~/.vnc
# Setup a password
RUN x11vnc -storepasswd 1234 ~/.vnc/passwd
# Autostart firefox (might not be the best way, but it does the trick)
RUN bash -c 'echo "firefox" >> /.bashrc'
EXPOSE 5900
CMD ["x11vnc", "-forever", "-usepw", "-create"]
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23. DockerHub
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24. GDG Spaghetti Code Liberec, 6.10.2015 24

25. Docker tools
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26. Docker compose
4 defining and running
multi-container
applications with
Docker
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27. docker-compose.yml
web:
build: .
ports:
- "5000:5000"
volumes:
- .:/code
links:
- redis
redis:
image: redis
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28. Docker machine
4 Machine lets you create Docker hosts on
your computer, on cloud providers, and
inside your own data center.
4 part of Docker toolbox
4 replacement for boot2docker
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29. Demo
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30. Docker swarm
4 Docker Swarm is native
clustering for Docker.
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31. Kinematic
4 desktop GUI for Docker
4 Mac and Windows only
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32. Docker Trusted Registry (DTR)
4 private dedicated image registry
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33. Yours private registry
4 storage at S3
docker run
-d
-p 5000:5000
--restart=always
--name registry
registry:2
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34. Open Container
ekosystem 1
1
https://www.mindmeister.com/389671722/open-container-ecosystem-
formerly-docker-ecosystem
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35. GDG Spaghetti Code Liberec, 6.10.2015 35

36. Docker at Heroku
heroku plugins:install heroku-docker
4 https://gist.github.com/abtris/
6aca9b2668b8b5af0208
4 app.json must contain:
{ image: heroku/nodejs }
4 app.json specification
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37. Dockerfile - heroku/nodejs
# Inherit from Heroku's stack
FROM heroku/cedar:14
# Internally, we arbitrarily use port 3000
ENV PORT 3000
# Which version of node?
ENV NODE_ENGINE 0.12.2
# Locate our binaries
ENV PATH /app/heroku/node/bin/:/app/user/node_modules/.bin:$PATH
# Create some needed directories
RUN mkdir -p /app/heroku/node /app/.profile.d
WORKDIR /app/user
# Install node
RUN curl -s https://s3pository.heroku.com/node/v$NODE_ENGINE/node-v$NODE_ENGINE-linux-x64.tar.gz |
tar --strip-components=1 -xz -C /app/heroku/node
# Export the node path in .profile.d
RUN echo "export PATH="/app/heroku/node/bin:/app/user/node_modules/.bin:$PATH"" >
/app/.profile.d/nodejs.sh
ONBUILD ADD package.json /app/user/
ONBUILD RUN /app/heroku/node/bin/npm install
ONBUILD ADD . /app/user/
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38. Create Dockerfile
heroku docker:init
$ cat Dockerfile
FROM heroku/nodejs
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39. Docker compose
web:
build: .
command: 'bash -c ''node index.js'''
working_dir: /app/user
environment:
PORT: 8080
ports:
- '8080:8080'
shell:
build: .
command: bash
working_dir: /app/user
environment:
PORT: 8080
ports:
- '8080:8080'
volumes:
- '.:/app/user'
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40. Start development environment
$ docker-compose up web
Building web...
...
$ curl "http://$(docker-machine ip dev):8080"
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41. Rebuild containers
Changes to your app and config.
docker-compose build
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42. Heroku Release
$ heroku create
...
$ heroku docker:release
...
$ heroku open
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43. Demo
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44. AWS Release
$ docker build -t abtris/docker-liberec-example-app
...
$ docker push abtris/docker-liberec-example-app
...
$ docker pull abtris/docker-liberec-example-app
...
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45. Run on AWS
$ docker run
-d
-p 3000:3000
abtris/docker-liberec-example-app
node index.js
$ curl http://localhost:3000
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46. Demo
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47. Docker & AWS
4 Elastic Beanstalk
4 EC2 Container Service (ECS)
4 EC2 with Swarm, Mesos or Kubernetes
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48. Questions?
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49. Credits
4 boat-containers.jpg 2
4 computer-scrap.jpg [^3]
4 vm-vs-docker.png [^4]
4 docker logos [^5]
4 formule_one.jpg [^6]
2
https://www.flickr.com/photos/41864721@N00/3451530961/
[^3]: https://www.flickr.com/photos/7362086@N02/2019666131/
[^4]: http://www.jayway.com/wp-content/uploads/2015/03/vm-vs-docker.png
[^5]: https://www.docker.com/brand-guidelines
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