The document discusses the relevance of Java development in a modern environment with a focus on Docker as an essential tool for developers and operations. It covers the fundamentals of Docker, including its installation, usage commands, and the advantages of containerization in application development. Additionally, it highlights Docker Compose for managing multiple containers and emphasizes the quick adaptability to new technologies in development workflows.

1. Does it matter
for Java Dev?

2. ● happy father
● SA in EPAM Systems
● Java is a primary language
● hands-on-coding with Groovy, Ruby
● exploring FP with Erlang/Elixir
● passionate about agile, clean code and devops

3. Agenda
● what is docker?
● how to
● dev env
● demo
● summary
● q&a

5. Docker https://www.docker.com/
Docker - An open platform for distributed
applications for devs and ops.
● Develop an app with any programming language and any
toolchain
● Ship the “Dockerized” app and dependencies anywhere
● Scale, move between data centers, update with zero
downtime and more

6. 1.8.3
released

7. Virtualization

8. Containerisation

9. Virtualization vs Containerisation

10. Container under the hood

11. Running containers

13. Installation
# apt-get update
# wget -qO- https://get.docker.com/ | sh

14. Command Line
$ docker images
$ docker pull webdizz/baseimage-java8
$ docker run -d --name=java8 webdizz/baseimage-java8
$ docker ps
$ docker logs java8
$ docker stop java8
$ docker start java8
$ docker top java8
$ docker build -t webdizz/baseimage-java8 .

15. Dockerfile
FROM phusion/baseimage:0.9.12
RUN apt-get -y update && apt-get -y install software-properties-common
python-software-properties && add-apt-repository ppa:
webupd8team/java && apt-get clean
RUN apt-get -y update && echo oracle-java8-installer
shared/accepted-oracle-license-v1-1 select true |
/usr/bin/debconf-set-selections && apt-get -y install oracle-
java8-installer && apt-get clean && update-alternatives --display java
ENV JAVA_HOME /usr/lib/jvm/java-8-oracle
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16. Docker Hub
● User accounts and Authentication
● Public namespaces
● Automated builds
● Registry for images with checksums
● Meta-data store (comments, stars, list public
repositories)

17. Official images

18. Official images for Java

19. Official images for Java...
● Clojure
● Tomcat
● Maven
● Glassfish
● Elasticsearch
● Jenkins
● SonarQube
● And more non-official

20. Dev Env

21. Perfect together

22. Routine is boring

23. Docker-compose is our way
● YAML syntax
● Configuration inclusion/inheritance
● Comprehensive CLI
● Bash completion

24. Docker-compose YAML
● image
● command
● links
● ports/expose
● volumes
● environment
● ...

25. Docker-compose CLI
● build
● up
● logs
● ps
● run
● start/stop
● scale

26. Demo Time

27. Summary
● Easy and fast building of images
● Easy to share in your team
● Easy to scale
● Easy to work with new technologies
● Of course learning curve
● Production like dev env*

28. ● http://docs.docker.com/
● https://docs.docker.com/release-notes/
● https://hub.docker.com/
● https://github.com/webdizz/web-scale-perf-testing
References

29. Q&A

30. Izzet_Mustafayev@EPAM.com
@webdizz webdizz
izzetmustafaiev
http://webdizz.name
Thanks