Docker Understanding

Jiji Lekshmi J S — Fri, 09 Dec 2022 07:47:30 +0000

What is Docker?

Docker is a container management Tool. It is a tool which save time, reduce costs and Improve Quality of work.

Save time - 1Day -> 5mins -> 1s
Reduce Cost- 1 APP -> 3 APP -> 10 APP
Improve Quality of work

What is Container?

Container is running instance of a docker image
It contains applications and os dependencies
It have everything a software needs to run.
It includes libraries, system tools, code etc.

How Docker work?

Request --> Docker Client --> api request -->Docker Server . Docker Server --> containerD --> Kernel -->creates isolated PID tree, ROOT FS , Network for the container runtime.

Docker helps to create, start ,stop , restart , pause , kill and remove containers.
Docker helps to build , test and deploy applications quickly.
Using Docker, we can quickly deploy and scale applications into any environment and know your code will run.

How Container work?

Multiple containers runs on the same machine and same kernel, each running as isolated processes.
Container helps in creation, deployment, scaling and deleting apps and services.
When you run an image you will get 1 container and if you run same image 10 times it will create 10 different containers.

What are the components of Docker?