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35 interview questions on Docker composefor developers (2025)

Test your technical skills before an interview of Docker compose with 35 corrected questions. Beginner, Intermediate or Expert level.

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Hard
6 votes436 runs0 comment

Find the errors in the `docker-compose.yml` file.

DevOps
docker-compose
Axelat Sep 6, 2023
Medium
6 votes410 runs0 comment

Which file takes precedence if services or options are redefined in several files?

DevOps
docker
files
Axelat Sep 6, 2023
Easy
3 votes441 runs0 comment

Is it possible to specify a maximum number of restart attempts with the `on-failure` policy?

DevOps
docker
restart
Axelat Sep 6, 2023
Easy
3 votes421 runs0 comment

What is the main use of Docker Compose?

DevOps
docker
docker-compose
Axelat Sep 6, 2023
Easy
2 votes390 runs0 comment

Connect a service to a network in Docker Compose

DevOps
docker-compose
networks
Thibault Lacrouxat Oct 6, 2023
Easy
2 votes372 runs0 comment

What is the image of the `web` service using `docker-compose -f docker-compose.dev.yml up`?

DevOps
docker-compose
environment
Axelat Sep 6, 2023
Easy
2 votes371 runs0 comment

How to use volumes in Docker Compose

DevOps
docker-compose
volumes
Axelat Sep 6, 2023
Medium
2 votes367 runs0 comment

What is the maximum number of healthcheck failures allowed by default before marking a container as unhealthy?

DevOps
docker
healthcheck
Axelat Sep 6, 2023
Easy
2 votes338 runs0 comment

Define an environment variable for a service in `docker-compose.yml`

DevOps
docker-compose
environment
Axelat Sep 6, 2023
Easy
1 vote375 runs0 comment

How to stop and delete all containers and services created with Docker Compose

DevOps
docker
docker-compose
Axelat Sep 6, 2023
Easy
1 vote375 runs0 comment

Build an image from a Dockerfile in a docker-compose.yml file

DevOps
dockerfile
docker-compose
Axelat Sep 6, 2023
Medium
1 vote374 runs0 comment

How to specify the name of a container in a `docker-compose.yml` file?

DevOps
docker-compose
container
Axelat Sep 6, 2023
Easy
1 vote369 runs0 comment

What is the purpose of the `args` directive in a `docker-compose.yml` file?

DevOps
docker-compose
dockerfile
Axelat Sep 6, 2023
Easy
1 vote368 runs0 comment

Force a service to be rebuilt without using the cache with Docker Compose

DevOps
docker
docker-compose
Axelat Sep 6, 2023
Easy
1 vote365 runs0 comment

What is the effect of the `healthcheck` directive on a service in a `docker-compose.yml` file?

DevOps
docker-compose
healthcheck
Axelat Sep 6, 2023
Easy
1 vote363 runs0 comment

Define the network driver to be used in a `docker-compose.yml` file

DevOps
docker-compose
network
Axelat Sep 6, 2023
Easy
1 vote236 runs0 comment

How does the `app` application connect to the `db` database?

DevOps
docker-compose
environment variables
Axelat Sep 6, 2023
Easy
1 vote149 runs0 comment

Override a service's default command in a `docker-compose.yml` file

DevOps
docker-compose
commands
Axelat Sep 6, 2023
Easy
1 vote129 runs1 comment

List all the services defined in a `docker-compose.yml` file

DevOps
docker-compose
services
Dorineat Dec 13, 2024
Hard
1 vote126 runs0 comment

Validate a docker-compose configuration without starting the services

DevOps
docker
compose
Axelat Sep 6, 2023