dockers

Question 1

what is docker ?

Answer 1

docker is an open source software that allows people to easily create, deploy, and run applications by using containers (virtual-machine-as-code).

Question 2

what is docker image

Answer 2

docker image: its a binary that allows docker to kick off a machine with all its pre-defined settings (docker run)

Question 3

what is docker container

Answer 3

docker container is an instance of an image. An image can have multiple instances running at the same time all executing same code however can have different ip addresses and data volume access.

Question 4

what is docker repository

Answer 4

docker repository is a repo where all images are stored and fetched from. docker hub is public repo. similarly companies can have their own docker repository. e.g. jfrog

Question 5

what is dockerfile

Answer 5

dockerfile: is a text file that contains all instructions to pull a base image and execute set of instructions to create desired image and container at run time

example:

Question 6

what is docker volumes ?

Answer 6

mount volumes: instead of storing files on dockers, you can mount volumes on it and access files.