Building images with docker build - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to build a Docker image from the current directory.

Docker

docker build [1] .

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

A-p 8080:80

B-d

C-t myimage

D--rm

Attempts:

3 left

💡 Hint

Common Mistakes

Using -d which is for running containers, not building images.

Using -p which is for port mapping when running containers.

Using -rm which is not a valid docker build flag.

The -t flag tags the image with a name, which is required to identify the built image.

2fill in blank

medium

Complete the command to build a Docker image using a specific Dockerfile named 'Dockerfile.dev'.

Docker

docker build -f [1] .

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

ADockerfile.txt

BDockerfile.dev

Cdockerfile

DDockerfile.prod

Attempts:

3 left

💡 Hint

Common Mistakes

Using a file name that does not exist.

Using lowercase 'dockerfile' which is not the correct file name.

Using a file with wrong extension like .txt.

The -f flag specifies the Dockerfile to use. Here, the file is named Dockerfile.dev.

3fill in blank

hard

Fix the error in the command to build an image with tag 'webapp:latest'.

Docker

docker build -t [1] .

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

Awebapp_latest

Bwebapp latest

Cwebapp/latest

Dwebapp:latest

Attempts:

3 left

💡 Hint

Common Mistakes

Using a slash '/' instead of a colon ':'.

Using spaces in the tag name.

Using underscores which are allowed but not standard for tags.

The tag format is name:tag. Using a slash or space is invalid.

4fill in blank

hard

Fill both blanks to build an image with tag 'app:v1' and no cache.

Docker

docker build [1] [2] .

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

A--no-cache

B-t app:v1

C-f Dockerfile

D--rm

Attempts:

3 left

💡 Hint

Common Mistakes

Using --rm which removes intermediate containers but does not disable cache.

Using -f Dockerfile which is default and not needed here.

Reversing the order of options is allowed but can confuse beginners.

The -t flag sets the image tag, and --no-cache forces Docker to build without using cache.

5fill in blank

hard

Fill all three blanks to build an image named 'backend' with tag 'v2', using Dockerfile 'Dockerfile.prod' and no cache.

Docker

docker build [1] [2] [3] .

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

A-f Dockerfile.prod

B-t backend:v2

C--no-cache

D--pull

Attempts:

3 left

💡 Hint

Common Mistakes

Using --pull instead of --no-cache.

Omitting the Dockerfile option when a custom file is needed.

Incorrect tag format or missing tag.

Use -f to specify the Dockerfile, -t to tag the image, and --no-cache to build fresh without cache.