2. DevAssistant, Docker and You
Slavek Kabrda
Senior Software Engineer, Red Hat

3. Part 1: Docker

4. What is
Docker/containerization?
How is it different from
virtualization?

5. https://www.vlent.nl/weblog/2014/09/28/how-we-use-virtualenv-buildout-and-docker/

6. Dockerfile, image, container
~
Makefile, binary, process

7. https://docs.docker.com/terms/container/
$ cat Dockerfile
FROM debian
RUN apt-get install emacs
RUN apt-get install apache2
$ docker build .
$ docker run <image> <cmd>

8. Evolution Comparison:
OSs vs. Applications

9. http://www.pwc.com/us/en/technology-forecast/2014/cloud-computing/features/microservices.jhtml

10. Docker++
● Speed++
● Development++
● Dependency management++
● Portability++
● Component reuse++
● Security?
● Friendly face!

12. So development with Docker
is super easy, right?

13. To do things properly
●
Kickstart your project's source code to get a minimal working sample
●
Find out what dependencies you'll need + how to install them in Docker image
●
Create Dockerfile for your application
●
Build your application image
●
Find out if there are suitable Docker images to use as other microservices for your app+learn how to use them/write your own Dockerfiles if not
●
Find out how to launch and link all the containers properly
●
Find out how to mount your code inside container
●
Write a terribly long command every time you start coding (or use a container orchestration tool, which you need to learn to use)
●
Write your code

14. To do things properly
●
Kickstart your project's source code to get a minimal working sample
●
Find out what dependencies you'll need + how to install them in Docker image
●
Create Dockerfile for your application
●
Build your application image
●
Find out if there are suitable Docker images to use as other microservices for your app+learn how to use them/write your own Dockerfiles if not
●
Find out how to launch and link all the containers properly
●
Find out how to mount your code inside container
●
Write a terribly long command every time you start coding (or use a container orchestration tool, which you need to learn to use)
●
Write your code

15. Part 2: DevAssistant

16. A tool to satisfy all developer's
needs (except brewing coffee)

17. What can DevAssistant do?
● Pretty much anything (pluggable)
– http://docs.devassistant.org/en/latest/developer_documentation.html
● Install dependencies
● Create GitHub repos
● Scaffold new projects
● Set up your environment
● And pretty much anything else…
– … assuming someone writes the plugin

18. Current Objective
To provide means to easily
kickstart and work with container
based production ready
environment

19. Demo

20. Part 3: Beer

21. Beer
● DevAssistant 100 GitHub Stars Beer Competition
● Get a free beer from me by following instructions from
– http://bit.do/da-beer
● Please don't ruin me

22. The End: Your Questions