Docker

Question 1

What is a docker container?

Answer 1

Smallest standalone unit of runnable software, along with all its required dependencies. It can be run on any docker platform.

Question 2

What is a docker container image?

Answer 2

A Docker container image is a lightweight, standalone, executable package of software that includes everything needed to run an application: code, runtime, system tools, system libraries and settings.

Question 3

What are three commands common to container, and to images in docker

Answer 3

ls –> list all images/containers
rm –> remove said image/container
inspect –> print lots of info about image/container

Question 4

what does docker system prune delete

Answer 4

unused containers, dangling images, unused networks

Question 5

which docker command creates and starts a container from an image?

Answer 5

docker run

Question 6

which option will you use to delete a container automatically after it is shut down

Answer 6

docker rum –rm

Question 7

U need to specify these two options when u want to interact with your container through a terminal

Answer 7

• i –> –interactive

- t –> –tty – attach a terminal to STDIN and STDOUT of the container.

Question 8

option to run a container in the background (OR) not have a terminal attached to our container.

Answer 8

docker run -d

–detach