Slides from Michal Szczur's talk "Docker - what's the matter?"

1. DOCKER - WHAT’S THE
MATTER?
MICHAL SZCZUR

2. MICHAŁ
SZCZUR
SOFTWARE DEVELOPER AT PGS SOFTWARE
BASS GUITARIST, TRUMPETER, FOLK MUSIC ARTIST
@PARTIKUS

3. AGENDA
▸ Docker - what is it and how it works?
▸ Docker vs Vagrant
▸ How to use Docker at work?
▸ Some examples and stories

4. WHAT IS
DOCKER?

5. WHY SHOULD I USE
DOCKER?

6. WHAT PROBLEMS DOCKER SOLVES?
▸ „it works on my machine”
▸ Reduce build & deploy time
▸ No more configuration spaghetti - organized configuration
▸ Libs dependency hell
▸ Packed into containers

7. DOCKER IS A PLATFORM FOR
DEVELOPERS AND SYSADMINS
TO DEVELOP, SHIP, AND RUN
APPLICATIONS.
docs.docker.com

8. Symfony
Docker

9. CONCEPTS
DOCKER

12. DOCKER CONCEPTS
CONCEPTS
▸ Images
▸ read only
▸ Dockerfile
▸ like a makefile
▸ commands order and cache’ing
▸ extendable
▸ as a result new image given
▸ Containers - instances of running apps

13. DOCKER
TOOLS

14. TOOLS
DOCKER SOLUTIONS
▸ DOCKER HUB
▸ DOCKER TRUSTED REGISTRY
▸ TUTUM
▸ DOCKER UNIVERSAL CONTROL PLANE (BETA)

15. TOOLS
DOCKER TOOLBOX
▸ Docker Machine
▸ Docker Swarm
▸ Docker Compose
▸ Docker Registry
▸ Docker Engine
▸ Kitematic

16. SEMANTICS
DOCKER REGISTRY

17. SEMANTIC LIKE GIT
▸ commit
▸ pull
▸ push
▸ images
▸ …

18. BENEFITS

19. BENEFITS
▸ Movable - Java’s promise
▸ Lightweight
▸ Independence

20. DOCKER
VS
VAGRANT

22. CREATE AND CONFIGURE
LIGHTWEIGHT, REPRODUCIBLE,
AND PORTABLE DEVELOPMENT
ENVIRONMENTS.
vagrantup.com

23. DOCKER
VS
VAGRANT
VIRTUAL MACHINE

24. VAGRANT
==
DOCKER-COMPOSE

25. HOW TO USE
DOCKER AT
WORK?

26. LOCAL DEV ENV
DOCKER FOR DEVELOPMENT

27. TESTING
CONTINUOUS INTEGRATION

28. TESTING
CONTINUOUS INTEGRATION
▸ run tests per every commit
▸ don’t worry about cleaning up
▸ running parallel tests

29. CONTINUOUS
DELIVERY
AUTOMATED DEPLOYMENT

30. DOCKER IN PAAS
MODEL
PAAS

31. PAAS
▸ DOKKU
▸ DEIS
▸ FLYNN.IO

32. EXAMPLES

33. DOCKERFILE
DOCKER

34. FROM php:5.6-cli
MAINTAINER job@michalszczur.pl
RUN docker-php-ext-install iconv intl mysqli mysql gd mbstring pdo_mysql xsl
opcache
RUN curl -sS https://getcomposer.org/installer | php &&
mv composer.phar /usr/local/bin/composer &&
chmod +x /usr/local/bin/composer
EXPOSE 8080
COPY php.ini /usr/local/etc/php
ADD entrypoint.sh /entrypoint.sh
VOLUME /var/www
WORKDIR /var/www
ENTRYPOINT ["/bin/bash", "/entrypoint.sh"]

35. #!/bin/bash
# ENTRYPOINT
composer install --no-interaction --no-progress
php -S 0.0.0.0:8080 -t web

36. DOCKER-COMPOSE
DOCKER

37. hub:
image: selenium/hub
ports:
- "4444:4444"
environment:
- GRID_TIMEOUT=30000
firefox:
image: selenium/node-firefox
links:
- hub
chrome:
image: selenium/node-chrome
links:
- hub

38. docker-compose up -d

39. docker-compose scale chrome=5 firefox=5

40. QUESTIONS?

41. THANKS

42. LINKS
▸ http://michalszczur.pl
▸ http://docs.docker.com
▸ http://vagrantup.com
▸ http://bit.ly/1IENdHh
▸ https://www.heroku.com/
▸ http://progrium.viewdocs.io/dokku/