Docker workshop
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Rafael Dutra gave a workshop on Docker at FOSS Day Lajeado 2018. The workshop covered what Docker is, the differences between containers and virtual machines, why one should use Docker, Docker terminology, images and layers, containers and layers, and the Dockerfile anatomy. Hands-on exercises demonstrated Docker installation, basic usage like running containers, interacting with containers, using Dockerfiles to build images, volumes, and Docker Compose.
![DOCKERFILE
# imagem base
FROM nginx
# copiando arquivo para um diretório específico
COPY index.html /usr/share/nginx/html
# rodando aplicação
CMD ["nginx", "-g", "daemon off;"]](https://image.slidesharecdn.com/docker-workshop-fossday-2018-180505192151/85/Docker-workshop-11-320.jpg)
![CREATING IMAGES
FROM php:7.2.5-cli-alpine3.7
CMD ["php", "--version"]](https://image.slidesharecdn.com/docker-workshop-fossday-2018-180505192151/85/Docker-workshop-33-320.jpg)
Docker workshop
- 1. WORKSHOP Rafael Dutra - FOSS Day Lajeado 2018 @raffaeldutra - Lajeado/RS
- 2. WHO AM I? ● Rafael Dutra ● SysAdmin and DevOps Enthusiast ● Security Information - UNISINOS 2008 - ? ● Linux user since 2005 ● Docker user since 2015 ● PHP (Laravel)/Shell/Ruby
- 3. WORKING WITH/AT Vagrant, Puppet, Continuous Integration, Continuous Deployment, Shell Scripting, Docker, AWS (learning) ... Shared Services Ops Team @crossover - https://crossover.com @jivesoftware - https://jivesoftware.com @aurea - https://www.aurea.com
- 4. AGENDA ● What’s Docker? ● Container vs Virtual Machine ● Why should I use Docker? ● Terminology ● Images and Layers ● Containers and Layers ● Dockerfile anatomy
- 5. WHAT'S DOCKER? ● Open Source technology ● Agility, accelerate software development and deployment ● Portability, eliminate the "works on my machine" ● Container is not Virtual Machine
- 6. CONTAINER VS VIRTUAL MACHINES
- 7. WHY SHOULD I USE DOCKER? ● Infrastructure as Code - IAC ● All application is an image ● Works on my machine, no more! ● Set up locally the same environment that you have in production, or any other environment ● Tests, a lot of them ● Community
- 8. TERMINOLOGY ● Images = is our “how it was built” / what we want to run it ● Containers = runs images in a dynamic way. By dynamic I meant multiple containers can run the same image doing different things. ● Volumes = where we want to store our data, could be our physical directory or a docker volume
- 11. DOCKERFILE # imagem base FROM nginx # copiando arquivo para um diretório específico COPY index.html /usr/share/nginx/html # rodando aplicação CMD ["nginx", "-g", "daemon off;"]
- 12. HANDS ON
- 13. HANDS ON AGENDA ● Docker installation ● The basics, running containers ● Interacting with containers ● Dockerfile ● Using volumes ● Docker Compose
- 14. DOCKER INSTALLATION ● Ubuntu: https://goo.gl/YFDkpv ● Debian: https://goo.gl/T6pmJd
- 16. DOCKER BASICS Need a medic? ask for help docker <command> --help
- 17. DOCKER BASICS Running our first container docker run alpine hostname
- 18. DOCKER BASICS Running our second container docker run hello-world
- 19. DOCKER BASICS Everything comes from an image docker run alpine hostname
- 20. DOCKER BASICS To list all images docker image ls
- 21. DOCKER BASICS To search an image docker search alpine
- 22. DOCKER BASICS To remove an image docker image rm alpine
- 23. DOCKER BASICS To pull (download) an image docker image pull ubuntu
- 24. DOCKER BASICS To pull (download) an specific image version docker image pull ubuntu:17.10
- 25. DOCKER BASICS Running our first web container docker run --detach --publish 45000:80 nginx ● action that we want to do ● options to detach (run it in background) and publish ports ● port that we want to access in our machine ● port running in the container ● image we are using at this moment
- 26. MANIPULATE CONTAINERS To list running containers docker container ls
- 27. MANIPULATE CONTAINERS To list all containers docker container ls -a
- 28. MANIPULATE CONTAINERS Stopping a container docker container stop <id>
- 29. MANIPULATE CONTAINERS Starting a container docker container start <id>
- 30. MANIPULATE CONTAINERS Interacting with them docker run --interactive --tty ubuntu /bin/bash
- 31. MANIPULATE CONTAINERS Executing …. something without enter in a container docker exec <id> <command>
- 33. CREATING IMAGES FROM php:7.2.5-cli-alpine3.7 CMD ["php", "--version"]
- 34. CREATING IMAGES docker build --tag fossday/php:7.2 .
- 35. RUN FORREST … RUN docker run --rm fossday/php:7.2
- 36. RUN FORREST … RUN docker run --rm fossday/php:7.2 --help
- 37. RUN FORREST … RUN WITH MATH <?php $val1 = 60; $val2 = 20; echo "Soma de ${val1} + ${val2} igual a: " . ($val1 + $val2) . "n";
- 38. RUN FORREST … RUN docker run --rm -v $(pwd)/soma.php:/root/soma.php fossday/php:7.2 php -f /root/soma.php
- 39. CLEANING Remove all images that we’re not using (dangling) docker image prune
- 40. CLEANING Remove all containers that are in stopped state (dangling) docker container prune
- 41. DOCKER COMPOSE ● Orchestrate containers ● YAML ● Single file: docker-compose.yaml ● Multi containers
- 43. QUESTIONS ? HERE WE GO
- 45. THANK YOU SEE YOU LATER