Arnaud Porterie discusses how Docker has changed development, continuous integration, and deployment. Docker provides standardized, universal ways to build and run code across different languages and stacks. It allows development environments and dependencies to be defined as code in Dockerfiles. Docker images can then be built, tested, and shipped once to run consistently in any environment. Docker solves common problems around repeatability, isolation, and defining applications as immutable artifacts. The talk explores ongoing areas of innovation around container runtimes, orchestration, and user experience as containers continue to grow in adoption.

1. The rise of Docker, and the
future of computing
Arnaud Porterie - @icecrime - 2015-09-29 - HPTS

2. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
Who am I?
• Arnaud Porterie, @icecrime on and
• Core maintainer of the Docker open source project
• Engineering manager at Docker

3. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
From dev to prod, what is
now different with Docker?

4. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
• Development dependencies described in a wiki page
• ~2 days process (when things go right)
• Team must keep the document up to date
Developer onboarding
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5. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
Developer onboarding
• Docker value: the builder
• Development environment as code, with the
Dockerfile as the source of truth
• Universal: get code, docker build, docker run
• Docker own dev environment is in Docker

6. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
Developer onboarding

7. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
Continuous integration
• Traditionally: specific hosts test a specific app
• Managed by the individual dev teams
• “Works on my machine” syndrome

8. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
Continuous integration
• Docker value: repeatability through isolation
• Running containers don’t share anything by default
• Tests don’t interfere with each other, no traces on host

9. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
Continuous integration
• Docker value: universality of operations
• Standard way to build & run across languages & stacks
• Docker own tests are run in a Docker container

10. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
• Dependency management
• Specialized ops for a set of services
Deployment
Code
Development Test Production

11. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
Deployment
• Docker value: unified artifact
• The Docker image is the artifact you build once, test,
ship & run in production

12. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
• Docker value: collaboration
• Docker Hub, on prem. Docker Registry
• Define deployment workflow, permissions
Deployment

13. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
Summing it up
• Docker elegantly solves very common problems
• Makes modern best practices natural
• Repeatability (e.g., host independence)
• Immutability (the Docker image is the unit)
• Single responsibility principle (microservices)

14. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
Docker is established as
an essential building block
for distributed applications

15. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
What’s next?

16. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
• Docker abstracts underlying OS differences
• Defines a unified API for processes management
Operating system

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• Race for the “best OS for running containers”
Operating system

18. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
Linux kernel
• Linux containers have existed for ~ a decade, but
never had as much attention than in the past 2 years
• Downside: aggressive kernel version requirements
can contribute to slowing down adoption

19. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
Container runtime
• The Open Container Initiative
• Driven by a group of technical experts (Docker,
Google, RedHat, CoreOS, IBM, …)
https://www.opencontainers.org

20. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
User experience
• Docker succeeded at the frontier of dev & ops
• Containers are now in everybody’s hands
• Can one size fit all?

21. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
Dev Ops
Docker
Early adopters
Want Docker end-to-end
Well established
Skeptics
Evaluating for production
Rapidly growing

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23. Arnaud Porterie - @icecrime - 2015-09-29 HPTS

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Orchestration
• Currently the biggest area of innovation
• Challenges: networking, storage, service discovery,
monitoring, log aggregation, …

25. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
Orchestration
Will a standard for
orchestration emerge?

26. Arnaud Porterie - @icecrime - 2015-09-29 HPTS
Thank you!
Questions?
arnaud@docker.com