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What is Docker ?
Answer : Docker helps in containerization of apps , so that app app gets it own environment to run.
What is a container ?
Containers virtualize the operating system unlike VMs. Containers are portable with that it means it can do development and deployment . In terms of docker its also runnable instance of image.
Benefits of Docker ?
- Fast to create unlike VMs
- Since OS is not contained its light weight
- container also contains the required versions of other applications needed for the app
- Any number of containers can be spin quickly
Docker Architecture ?
Docker uses client-server architecture . One of the important component is registry . eg app store , jfrog all the registries
Container Lifecycle ?
Create – run -stopped- pause-delete
How docker worker?
Docker images contains all the dependencies needed to run code inside a container. Docker is a container engine basically.