DCA. certificate slide Docker Certifications validate technical knowledge with an industry-recognized credential. Our certifications recognize technical skills on the Docker platform. Q: How do I become Certified? You must earn a passing score via a proctored exam to earn a Docker Certification. Upon receiving a passing score, you will receive your certification credentials. While the Docker Certified Associate certification is designed for enterprise practitioners leveraging the Docker Enterprise Edition (EE) platform in production you will find that many of the topics covered in this foundational certification are also applicable to the freely available Docker Community Edition (CE) due to it's similarity to Docker EE Basic Familiarity with Docker CE is certainly a strong asset and would contribute towards an individual's success on the exam. You can find more information about exactly what topics are covered on the exam in the Study Guide.

1. Docker Certified Associate (DCA)
Create by: HadiTayanloo
Phone : +98-912-8387233
Linkedin: linkedin.com/in/htayanloo/

2. Session 1
• Application Modernization
• Docker is ...
• Docker Overview
• Container vs virtualmachine
• Key Benefits of Docker Containers
• Docker Engine
• Install Docker On Centos 7
• Install Docker On Ubuntu 18.4
• Docker installation Directory and important
• Lab-1 (Steps of a Docker workflow )

3. Application Modernization

4. Isolated package in Container

5. Container vs virtual machine

6. Container vs virtualmachine

7. DockerVS LXC

9. Docker Editions
• Docker Community Edition
• Docker Enterprise Edition

10. Run Docker anywhere

11. Resource
• https://docs.docker.com/

12. Docker Engine
Docker CLI
REST API
Docker Deamon
Docker Engine

13. Docker Engine
Docker CLI
REST API
Docker Deamon
Docker Engine Laptop
docker –H=remote-docker-engine:2375

14. Containerization
NameSpace
Process ID UnixTimesharing
Mount
Network
InterProcess

15. NameSpace - PID
PID : 1
PID : 2
PID : 3
PID : 4
PID : 5
Linux System
Child System (Container)
PID : 1
PID : 2

16. Cgroup
Linux System
Docker
Container
Docker
Container
Docker
Container
CPU Memory

17. Docker Storage
• /var/lib/docker
• Aufs
• Containers
• Image
• Volumes

18. Docker Installation Centos 7
• https://github.com/htayanloo/DCA-Course/blob/master/Course-Doc/Session-
1/Docker-Centos-Installation.txt

19. Docker Installation Ubuntu
• https://github.com/htayanloo/DCA-Course/blob/master/Course-
Doc/Session-1/Docker-Ubuntu-Installation.txt

20. Proxy Set Docker
• Create a systemd drop-in directory for the docker service:
sudo mkdir -p /etc/systemd/system/docker.service.d
• Create a file called /etc/systemd/system/docker.service.d/http-proxy.confthat adds the HTTP_PROXY environment variable:
[Service] Environment="HTTP_PROXY=http://proxy.example.com:80/”
sudo systemctl daemon-reload
sudo systemctl restart docker
systemctl show --property=Environment docker

21. Docker Commands
• Note : Command Structure
• docker [option] [command] [arguments]

22. Docker Get Image from Dockerhub.
docker run hello-world
• Unable to find image 'hello-world:latest' locally
• latest: Pulling from library/hello-world
• d1725b59e92d: Pull complete
• Digest:
sha256:b3a26e22bf55e4a5232b391281fc1673f18462b75cdc76aa103e6d3a2b
ce5e77
• Status: Downloaded newer image for hello-world:latest
• Hello from Docker!

23. View Docker image (hello-world) from Dockerhub.
[root@dn1 ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
hello-world latest 4ab4c602aa5e 3 months ago 1.84kB
docker images -a > show all images
docker images -q > show ONLY Image ID

24. Docker Container Execute and Input to Container
• docker run -it IMAGE:TAG
• docker run -it centos:latest