Containerization using docker
- 1. Containerization using Docker Presented by Wing Chan Photo by frank mckenna on Unsplash
- 2. Agenda • What's containerization? • What's Docker? • What's inside Docker? • Why use Docker containers? • Live Demo Photo by Glenn Carstens-Peters on Unsplash
- 3. What's containerization? • Containerization is an OS-based virtualization which create multiple virtual units in isolated user space instances, known as Containers. • Containers implement the isolation of processes at the OS level. • Containers can run virtually anywhere, easy development and deployment. Photo by Jacek Dylag on Unsplash
- 4. What's Docker? • Docker is the world's leading software container platform. It was launchedin 2013 by a company called Docker, Inc. • It is written in Go language. • Docker uses the resource isolationfeatures of Linux kernel to allowsmultiplecontainers running on a single Linux instance. • Docker provides all necessary tools for create, deploy and run your applicationsby using containers.
- 6. What's inside Docker? • Docker Clients and Servers – client/server architecture. • Docker Images – build docker containers by using a read-only template. • Docker Containers – a runtime instance of Docker image. • Docker Registries – a storage component for Docker Images. Docker Hub is their public registry server. • Docker File – a text file that contains a list of instructions on how to build your Docker Image.
- 7. Why use Docker containers? • Speed – The time required to build a container is very fast because they are small and lightweight. • Portability - by design containers are very portable and can be deploy to different machines and performance remain the same. • Scalability - It can be deployed in multiple physical servers, data servers and cloud platforms easily. • Density - Docker uses the resources more efficiently and more containers can be run on a single host machine compared to VMs which use a hypervisor. Photo by Andy Li on Unsplash