Docker: The Blue Whale of Awesomness
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Docker provides an easy way to package, distribute, and run applications. It uses containers, which are like lightweight virtual machines that allow applications and their dependencies to run on any infrastructure regardless of the underlying operating system. Containers are more efficient than virtual machines because they share resources from the host operating system and only include the files required to run the application, unlike virtual machines which bundle operating systems. Common uses of Docker include building applications into containers and deploying them across development, testing, and production environments for consistent results.
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Why everyone is excited about Docker (and you should too...) - Carlo Bonamic...
In less than two years Docker went from first line of code to major Open Source project with contributions from all the big names in IT. Everyone is excited, but what's in for me - as a Dev or Ops? In short, Docker makes creating Development, Test and even Production environments an order of magnitude simpler, faster and completely portable across both local and cloud infrastructure. We will start from Docker main concepts: how to create a Linux Container from base images, run your application in it, and version your runtimes as you would with source code, and finish with a concrete example.
Be a happier developer with Docker: Tricks of the trade
This document provides an overview of how Docker can make developers happy by providing clean and perfect development environments, fast application mobility and repeatability, and enabling great collaboration through microservices architecture. It then discusses various workflows and techniques for using Docker, including developing inside a single running container, leveraging containers to modularize code, reusing Dockerfiles, sharing data between containers through volumes, accessing Docker in a VM through methods like NFS or Samba, using linked containers for simple service connections, and opening ports on containers using techniques like port forwarding, VBoxManage port exposure, and iptables.
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Docker: The Blue Whale of Awesomness
- 1. DOCKER THE BLUE WHALE OF AWESOMENESS
- 5. WHY THE HYPE FOR DOCKER?
- 9. DOCKER PROVIDES AN EASY AND EFFICIENT WAY TO PACKAGE, DISTRIBUTE AND RUN APPLICATIONS RANDOM NETIZEN WHAT IS DOCKER?
- 11. IS DOCKER LIKE A … VIRTUAL MACHINE?
- 12. YES… AND NO!
- 14. But first… …a little History
- 16. DEVELOPMENT HOST OS APP BIN / LIBS STAGING HOST OS APP BIN / LIBS PRODUCTION HOST OS APP BIN / LIBS ANCIENT WAY
- 17. VIRTUAL MACHINE PROVISIONING SCRIPT (e.g. Puppet) CODE REPOSITORY (e.g. Git) DEVELOPMENT HYPERVISOR APP BIN / LIBS HOST OS GUEST OSGUEST OS APP BIN / LIBS PRODUCTION HYPERVISOR APP BIN / LIBS HOST OS GUEST OSGUEST OS APP BIN / LIBS STAGING HYPERVISOR APP BIN / LIBS HOST OS GUEST OSGUEST OS APP BIN / LIBS
- 18. CONTAINER IMAGE (e.g. Docker Image) IMAGE REPOSITORY (e.g. Docker Hub) DEVELOPMENT CONTAINER ENGINE (e.g. Docker Engine) HOST OS [CONTAINER] APP BIN / LIBS [CONTAINER] APP BIN / LIBS DEVELOPMENT CONTAINER ENGINE (e.g. Docker Engine) HOST OS [CONTAINER] APP BIN / LIBS [CONTAINER] APP BIN / LIBS DEVELOPMENT CONTAINER ENGINE (e.g. Docker Engine) HOST OS [CONTAINER] APP BIN / LIBS [CONTAINER] APP BIN / LIBS CONTAINER
- 19. ` CONTAINER (Docker) VIRTUAL MACHINE Build project into the environment Build project together with the environment
- 21. DOCKER WITHIN VIRTUAL MACHINE
- 22. VIRTUAL MACHINES are like HOUSES! ▸ Offer protection from unwanted guests ▸ Each has its own infrastructure; plumbing, electrical, water ▸ Each has at least a bedroom, living area, and kitchen ▸ You may end up buying more than what you really need
- 23. DOCKER CONTAINERS are like APARTMENTS! ▸ Offer protection from unwanted guests ▸ Built around shared infrastructure; plumbing, electrical, water ▸ Are offered in different sizes; studio, multi-bedrom, penthouse ▸ You’re renting exactly what you need
- 25. NOTE: Make sure that DOCKER is installed in you machine. $ docker container run -p 8080:80 nginx RUN THIS IN YOUR COMMAND LINE
- 26. Access localhost:8080 in your web browser.
- 28. What happens in ‘docker container run’? ‣ Looks for image locally. (image: nginx) ‣ If not available locally, looks in remote image repository. (default: hub.docker.com), then downloads the image. ‣ Creates new container based on the image and prepares to start it. Note: An instance of an image is called container. ‣ Opens up port 8080 on host and forwards it to port 80 in the container. $ docker container run -p 8080:80 nginx
- 29. RECOMMENDED RESOURCES: ▸ Official tutorial on docker website. https://docs.docker.com/get- started/ ▸ One-stop shop on getting your hands dirty with Docker. https:// docker-curriculum.com ▸ Docker Mastery: The Complete Toolset from a Docker Captain @ Udemy. Wait for the $10 SALE! https://www.udemy.com/docker- mastery/ ▸ Check videos on YouTube (e.g. LearnCodeAcademy https:// www.youtube.com/watch?v=pGYAg7TMmp0 ) ▸ Check Docker images at docker hub. https://hub.docker.com ▸ INTERNET!!!
- 30. SIGFRED B. BALATAN JR. ▸ sj.balatan@gmail.com ▸ https://www.linkedin.com/in/sjbalatan26/ ▸ +63 915 253 3212