What is Docker - Interactive Quiz & Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to run a Docker container from the nginx image.

Docker

docker run [1] nginx

Drag options to blanks, or click blank then click option'

A-d

B-p

C--rm

D-v

Attempts:

3 left

💡 Hint

Common Mistakes

Using -p instead of -d runs the container with port mapping, not detached.

The -d option runs the container in detached mode, meaning it runs in the background.

2fill in blank

medium

Complete the command to list all Docker containers, including stopped ones.

Docker

docker ps [1]

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A-l

B-a

C-q

D-s

Attempts:

3 left

💡 Hint

Common Mistakes

Using -l shows only the last created container.

The -a option shows all containers, including those that are stopped.

3fill in blank

hard

Fix the error in the command to build a Docker image from a Dockerfile.

Docker

docker build -t [1] .

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Arun

Bstart

Ccontainer

Dmyimage

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'run' or 'start' as image names causes errors.

The -t option tags the image with a name. 'myimage' is a valid image name.

4fill in blank

hard

Fill both blanks to create a Docker volume and mount it to a container.

Docker

docker volume [1] mydata && docker run -v mydata:[2] nginx

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Acreate

B/data

C/app

Dremove

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'remove' instead of 'create' deletes volumes.

create makes a new volume named 'mydata'. Mounting it to /data inside the container shares the volume.

5fill in blank

hard

Fill all three blanks to write a Dockerfile that uses an alpine base image, copies a file, and runs a command.

Docker

FROM [1]
COPY [2] /app/
CMD ["[3]"]

Drag options to blanks, or click blank then click option'

Aalpine

Bscript.sh

Csh

Dubuntu

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'ubuntu' as base image changes the image size.

The base image is alpine. We copy script.sh into the container. The command sh runs the shell.