The presentation shows real life examples on how to use Docker for development and testing purposes.

1. Docker Practical Use Cases
Alexei Yuzhakov

2. Docker?!
• Buzz word
• No clear understanding
• Rarely used for dev & testing use cases
• You apps deployment

3. Installation
• Docker Toolbox • Kitematic

4. Use Case: Different Versions
• LAMP app
• MySQL depends on Linux distro
• Different versions of MySQL

5. Use Case: Different Versions
• MySQL 5.5
• MySQL 5.6
• MySQL 5.7
• MariaDB 10.1

6. Use Case: Different Versions
• docker run … -d mysql:5.5
• docker run … -d mysql:5.6
• docker run … -d mysql:5.7
• docker run … -d mariadb:10.1

7. Use Case: PHP 7
• Find problems
• Fix code
• Fix unit tests

8. Use Case: PHP 7
• docker run –it –v `pwd`:/app php:7 bash
• Container as playground
• PHP 7 vs. PHP 5.6

9. Use Case: Similar Environment
• Ubuntu 12.04 & Travis CI
• docker run -it ubuntu:12.04 bash
• 58 sec for 1st
time
• <1 sec for the next time

10. Use Case: Build Farm
• Local build farm
• Jenkins
• TeamCity
• Buildbot

11. Use Case: Tools Evaluation

12. Use Case: Quick Install

13. More Use Case
• …
• Your stories here 

14. Issues & Tricks
• Docker container != VPS
• Process (life cycle)
• No SSH
• docker exec -it <CT-ID> bash

15. Issues & Tricks
• No connection to Docker daemon

16. Issues & Tricks
• docker version
• VirtualBox machine status
• eval "$(docker-machine env)"

17. Issues & Tricks

18. Issues & Tricks
• Container changes
• Environment variables
• Port-mapping
• Volume mapping
• Container re-creation

19. Issues & Tricks
• Image docs

20. Issues & Tricks

21. Issues & Tricks
• docker run …
• docker commit
• docker images
• docker run …

22. Issues & Tricks
• Dockerfile & docker build
• Mount points
• Main process selection
• Privileged operations
• ...

23. Conсlusion
• “Must have” tool
• 100,000+ ready-to-use images
• A lot of use cases

24. Thank You!

25. Alexei Yuzhakov
ayuzhakov@plesk.com
https://github.com/sibprogrammer
Questions?