Docker engine and runtime - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to start the Docker service.

Docker

sudo systemctl [1] docker

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

Arestart

Bstart

Cstop

Dstatus

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'stop' instead of 'start' stops the service.

Using 'status' only shows the service status but does not start it.

The start command tells systemctl to start the Docker service so it runs in the background.

2fill in blank

medium

Complete the command to check the Docker engine version.

Docker

docker [1] version

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

Arun

Binfo

Cversion

Dps

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'docker info' shows system info but not just the version.

Using 'docker ps' lists running containers, not version.

The docker version command shows the Docker engine and client version details.

3fill in blank

hard

Fix the error in the command to run a container interactively.

Docker

docker run -[1] ubuntu /bin/bash

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

Av

Bd

Cp

Di

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-d' runs the container detached (in background).

Using '-p' is for port mapping, not interactive mode.

The -i flag keeps STDIN open for interactive mode, allowing you to interact with the container.

4fill in blank

hard

Fill both blanks to list all Docker containers including stopped ones.

Docker

docker [1] [2]

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

Aps

B-a

C-l

Dimages

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'docker images' lists images, not containers.

Using '-l' shows only the last created container.

The command docker ps -a lists all containers, including those stopped.

5fill in blank

hard

Fill all three blanks to build a Docker image with a tag from a Dockerfile in the current directory.

Docker

docker [1] -t [2] [3]

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

Abuild

Bmyapp:latest

C.

Drun

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'docker run' instead of 'docker build' tries to run a container.

Forgetting the '.' means Docker won't know where the Dockerfile is.

The command docker build -t myapp:latest . builds an image named 'myapp' with tag 'latest' from the current directory.