Compose file versioning in Docker - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the Compose file version at the top.

Docker

version: '[1]'
services:
  web:
    image: nginx

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

A3.8

B2.4

C1

Dlatest

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'latest' as version is invalid.

Using a number without quotes.

The Compose file version is specified as a string at the top. Version '3.8' is a common modern version.

2fill in blank

medium

Complete the Compose file to define a service named 'db'.

Docker

version: '3.8'
services:
  [1]:
    image: postgres

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

Acache

Bbackend

Cfrontend

Ddb

Attempts:

3 left

💡 Hint

Common Mistakes

Using unrelated service names like 'cache' or 'frontend'.

The service name here should be 'db' to represent the database service.

3fill in blank

hard

Fix the error in the Compose file version declaration.

Docker

version: [1]
services:
  app:
    image: alpine

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

Alatest

B3.7

C'3.7'

D'latest'

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting quotes around the version number.

Using 'latest' which is invalid.

The version must be a string in quotes, like '3.7'. Without quotes, it causes a syntax error.

4fill in blank

hard

Fill both blanks to define a Compose file with version and a service named 'cache'.

Docker

version: '[1]'
services:
  [2]:
    image: redis

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

A3.9

Bdb

Ccache

D2.1

Attempts:

3 left

💡 Hint

Common Mistakes

Using an old version like '2.1'.

Wrong service name like 'db'.

The Compose file version is '3.9' and the service name is 'cache' for Redis.

5fill in blank

hard

Fill all three blanks to create a Compose file with version, a service named 'web', and specify the image.

Docker

version: '[1]'
services:
  [2]:
    image: [3]

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

A3.8

Bweb

Cnginx:latest

Ddb

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'db' as service name instead of 'web'.

Omitting the image tag.

The Compose file version is '3.8', the service is 'web', and the image is 'nginx:latest'.