Master Docker - first meetup
- 2. What do you know about Docker?
- 3. How do you build and run applications?
- 5. Images
- 6. What is an image? ● A transportable file system ● Contains everything an app needs to run – App source code or binary – App dependencies (configuration files, libraries...)
- 7. More about images ● An image typically contains a union of layered filesystems stacked on top of each other. ● Each layer consists of: – Filesystem changes – Metadata ● Using layers, we can build a new image on top of another by simply adding a new layer
- 8. Dockerfile ● A Dockerfile is a text document that contains all the commands a user could call on the command line to assemble an image ● It’s like the source code for your image https://docs.docker.com/engine/reference/builder
- 9. Demo: from an image to a container
- 11. What was that? A container? ● A process or a set of processes isolated from the rest of the system ● Necessary files for their execution are provided by a separate image ● This means that they work the same way in different environment
- 12. VMs vs Containers VMs Containers https://www.docker.com/resources/what-container
- 13. Docker 101
- 14. What is Docker ? Docker is an open platform for developing, shipping, and running applications. Docker enables you to separate your applications from your infrastructure so you can deliver software quickly. https://docs.docker.com/engine/docker-overview/
- 15. mysql bash httpd
- 16. w3wp.exe nginx
- 17. w3wp.exe nginx
- 19. Manager Worker Worker PS> docker … Worker
- 21. Run a container • docker container run <image> • docker container run hello-world
- 22. Hello World: What Happened? $ docker run hello-world Unable to find image locally latest : Pulling from library / hello-world Status: Downloaded newer image forhello-world:latest Hello from Docker! . . . DockerEngine Linux play-with-docker.com ❹ ❷ ❶ ❸ hel l o-worl d:l atest ImageRegistry https://store.docker.com Repository: library Image: hello-world Tag: latest
- 23. Pull images • docker image pull <image> • docker image pull alpine • docker image ls • docker container run alpine ls -l
- 24. DockerEngine Linux $ docker run alpine ls –l ❶ Run the alpine container and send l s -l alpine launchesand runsl s -l ❷ DockerEngine Linux Alpine container $ l s –l alpineOS DockerEngine Linux t ot al 8 dr wxr - xr - x . . . bi n dr wxr - xr - x . . . dev dr wxr - xr - x . . . et c dr wxr - xr - x . . . home . . ❸ alpine shutsdown and output of l s –l sent back to host OS docker r un Details
- 25. More runs • docker container run alpine /bin/sh • docker container run -it alpine /bin/sh
- 26. List containers • docker container ls • docker container ls -a
- 27. Docker Container Instances Output of docker container ls -a alpine ls –l Exi t ed ( 0) alpine /bin/sh Exi t ed ( 0) alpine echo Exi t ed ( 0) hello-world /hello Exi t ed ( 0) Container Instances Container IDs 36171a5da744 a6a9d46d0b2f c317d0a9e3d2ff0a5c3750b9 Container Names lonely_kilbyfervent_newton stupefied_mcclintockelated_ramanujan
- 28. It’s time to get your hands dirty
- 29. What’s Next ★ Official Documentation: https://docs.docker.com/ ★ Play With Docker Classroom: https://training.play-with-docker.com/ ★ Valuable Docker Links: https://www.nkode.io/2014/08/24/valuable-docker-links.html ★ Example project including Dockerfile and docker-compose: https://github.com/youben11/open-class
- 30. Questions ?