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?
- Docker images
- Docker Registry
- Docker engine
- Dockerfile
- Docker containers
- Docker desktop
- Docker hub
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