1. DOCKER COMPOSE
Felipe Ruhland @ Python Floripa

2. DOCKER
ABOUT

3. ABOUT
DOCKER
written in golang

4. ABOUT
DOCKER
open-source project

5. DOCKER
developers and sysadmins
ABOUT

6. DOCKER
develop, ship, and run
ABOUT

7. DOCKER
production as fast as possible
ABOUT

8. history

9. Solomon Hykes
history

10. history

11. history
main
contributors

12. JAN
$15 million
(Venture Capital)
JUL
Docker acquired
Orchard (Fig)
2014
SEP
$40 million
(Sequoia Capital)
OCT
Microsoft announced
integration (2016)

13. DOCKER
WHY

14. LIGHTWEIGHT
OPEN
SECURE

15. - Faster delivery of your applications
- Deploy and scale more easily
- Get higher density and run more workloads
- Faster deployment makes for easier management
WHY DOCKER

16. CONTAINER
VMvs

17. CONTAINERVM

18. WORKS
HOW IT

19. HOW IT WORKS
- libcontainer (libvirt, LXC, systemd-nspawn)
- cgroups
- namespaces
- images distribution

20. COMPOSE
DOCKER

21. DOCKER COMPOSE

22. - Tool for defining and running multi-container applications
- Single file configuration
- Great for development environments, staging servers, and CI
- Written in python
- We don’t recommend that you use it in production yet.
DOCKER COMPOSE

23. - Binding to different ports on the host
- Setting environment variables differently
- Specifying a restart policy
- Adding extra services
BUT
!

24. #1
define
environment
with Dockerfile

25. #2
define services
with docker-
compose.yml

26. #3
docker-
compose up

27. dockerfile
FROM python:2.7
ADD . /code
WORKDIR /code
RUN pip install -r requirements.txt
CMD python app.py

28. docker-compose.yml
web:
build: .
ports:
- "5000:5000"
volumes:
- .:/code
links:
- redis
redis:
image: redis

29. docker-compose up
$ docker-compose up
Pulling image redis...
Building web...
Starting composetest_redis_1...
Starting composetest_web_1...
redis_1 | [8] 02 Jan 18:43:35.576 # Server started, Redis version 2.8.3
web_1 | * Running on http://0.0.0.0:5000/

30. docker compose cli
commands
build
logs
run
scale
up

31. github.com/feliperuhland
feliperuhland.com
@feliperuhland
THANK YOU