Getting Started with Docker * 2017 Trends * * Containers * Docker - Docker image - Docker container * Docker Compose * Docker Cloud * Docker insights and statistics Link: https://docs.google.com/presentation/d/e/2PACX-1vRAuCJYVzDINO6szlDyqVVWP717S-MaWxYYqsGKOex9z_-eDSMr4u4DP26UQgaEEul4eEqrjAR6NDaT/pub?start=false&loop=false&delayms=3000

2. About me
Fathi Jemli
● Software engineer @ Proxym-IT
● DevOps and Big Data enthusiast
Em@il: jemlifathi2013@gmail.com Twitter: @jemlifathi

3. 2017 Trends
● Microservices
● Cloud Computing
● Server less development
● Environment independent development
● Analytics
● Big Data
● DevOps: CI/CD, Automation, Monitoring, etc.

4. Yesterday
VS
Now

5. Nowadays applications needs many technologies

6. Too many choices. Right?

7. BUT!

8. You have to take into consideration
● Technologies requirements
● Compatibility
● Portability: build once, run everywhere
● Keeping your system clean and healthy
● Performance

9. The Matrix From Hell

10. OMG! I hate my job!

11. What We Need
A solution to run each technology on its own environment, without worrying about its
compatibility, test, integration and portability.

12. Solutions over
time
● Virtual machines
● Free BSD jails
● Solaris zones
● LXC: Linux containers

13. What Are Containers
● Container is a standard format
● Operating System virtualization
● Isolated user space instances in term of process and file system
● Shares host Linux kernel
● Easily portable across environment
● Packages up software binaries and dependencies

14. What about
Docker:
Build, Ship
and Run
everywhere

15. Docker in 2013
A lightweight runtime and robust tooling to build and run
virtual containers on Linux to create the operating environment
for your distributed applications.

16. Docker in 2017
A Containers as a Service (CaaS) platform which
enables an IT Ops managed and secure application
environment (infrastructure and content) for developer
self service to build and deploy applications.

17. Docker VS VM

18. Docker VS VM

19. Docker System

20. Docker system

21. Docker image
● A static definition of a container
● An image is a stack of reusable image layers
● An image have a base image
● Image properties:
○ Name
○ Tag ( by default “latest”)
○ Id
○ Size

22. Docker image

23. docker pull: pulling existing image
● docker pull java:8
● docker pull alpine:3.5
● Docker pull redis
Docker image
Dockerfile: definition of an image
FROM node:6.3.1
maintainer jemlifathi
# Create app directory
RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app
RUN npm install nodemon -g
RUN npm install pm2 -g
# Install app dependencies
COPY package.json /usr/src/app
CMD npm install
EXPOSE 3000
docker build: building an image
$>docker build -t my-image
relative_path_to_folder_containing_Docker
file

24. Docker
container
● An instance of an image
● We can create many containers out of one
image
● An image have a base image
● Container properties
○ Id
○ Status
○ Command, etc
● Container/machine interaction:
○ Volumes
○ Ports, etc

25. Docker container
Example: running a container
● docker run -it --name ubuntu-14 ubuntu:14.04 /bin/bash
● docker run -d --name webserver -v $(PWD)/webapp/:/usr/share/nginx/html -p
80:80 nginx
● docker run --name db -d -v $(PWD)/data/:/var/lib/mysql -p 3307:3306 -e
MYSQL_ROOT_PASSWORD=passwd -e MYSQL_DATABASE=test mysql:5.6
● docker run --name cache -d -p 6380:6379 -v $(PWD)/cache/:/data redis
● docker run --name backend -d -p 3000:3000 -v $(PWD)/backend/:/src/app/ --
link cache:cache --link db:db npm start
----------------------------------------------------------------------------------------------------------------------------------
-
● docker ps (-alq)

26. Docker Compose
Docker Compose let you define, automate and run
multi-container applications.

27. Docker Compose
You define your architecture (services, networks, etc) in a “docker-
compose.yml” file and Docker Compose validate your configuration,
starts your multi container app.
docker-compose.yml

28. Docker Cloud
Docker Data Center brings container management
and deployment to enterprises with a production
ready platform supported by Docker.

29. Docker Landscape

30. Statistics About Docker (2016)
● 2B+ Docker Image pulls
● 2000+ contributors
● 47K+ GitHub stars
● 200K+ Dockerized Apps
● 240 Meetups in 70 countries
● 95K+ Meetup Members

31. Docker Insights (2016)

32. Docker Insights (2016)

33. Docker Insights (2016)

34. Try to keep your
containers like this

35. Not like this!

36. Demo
Dockerized ELK