Multiple Compose files (override) in Docker - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to start services using the default Compose file.

Docker

docker-compose [1]

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

Aup

Bbuild

Cstart

Drun

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'build' instead of 'up' to start services

Using 'start' which only starts existing containers

Using 'run' which runs a one-off command

The docker-compose up command starts the services defined in the default docker-compose.yml file.

2fill in blank

medium

Complete the command to use an override Compose file named docker-compose.override.yml.

Docker

docker-compose -f docker-compose.yml -f [1] up

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

Adocker-compose.prod.yml

Bdocker-compose.extra.yml

Cdocker-compose.dev.yml

Ddocker-compose.override.yml

Attempts:

3 left

💡 Hint

Common Mistakes

Using a production or development file instead of the override file

Forgetting to specify the override file with -f

The -f option specifies Compose files. The override file is usually named docker-compose.override.yml.

3fill in blank

hard

Fix the error in the command to apply multiple Compose files for override.

Docker

docker-compose -f [1] -f docker-compose.override.yml up

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

Adocker-compose.override.yml

Bdocker-compose.yml

Cdocker-compose.prod.yml

Ddocker-compose.dev.yml

Attempts:

3 left

💡 Hint

Common Mistakes

Using the override file as the first file

Using a production or development file instead of the base file

The base Compose file must be docker-compose.yml before the override file.

4fill in blank

hard

Fill both blanks to override the environment variable DEBUG to true in the override file.

Docker

services:
  app:
    [2]:
      DEBUG: [1]

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

Atrue

Bfalse

Cenvironment

Dports

Attempts:

3 left

💡 Hint

Common Mistakes

Setting DEBUG to 'false' instead of 'true'

Using 'ports' instead of 'environment' key

The override file sets DEBUG to true under the environment key.

5fill in blank

hard

Fill all three blanks to correctly merge two Compose files where the override changes the image and adds a volume.

Docker

version: '3'
services:
  web:
    image: [1]
    volumes:
      - [2]
    [3]

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

Anginx:latest

B./data:/var/www/html

Cports

Dnginx:stable

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong image tag

Forgetting to add the volume mapping

Missing the ports key for exposing ports

The override changes the image to nginx:stable, adds a volume mapping, and includes the ports key for port mapping.