Job offersCompaniesTestsBlogI'm an employerSign upLog in
fr
fr
Home>IT Tests>Questions>Docker

91 interview questions on Dockerfor developers (2026)

Test your technical skills before an interview of Docker with 91 corrected questions. Beginner, Intermediate or Expert level.

or
Technology
Profession
Test
Sort by
Newest
Most popular
Last review
Filter by
Published
91
To review
0
91 questions
Hard
14 votes1108 runs0 comment

List the different types of networks that can be created with Docker

DevOps
docker
networks
Axelat Sep 6, 2023
Medium
12 votes1057 runs
1 comment

What is the main advantage of multi-stage builds in a Dockerfile?

DevOps
dockerfile
docker
Axelat Sep 6, 2023
Medium
8 votes1003 runs1 comment

Connect an existing container to a Docker network

DevOps
docker
network
Axelat Aug 29, 2023
Easy
6 votes971 runs0 comment

List all Docker volumes on a machine

DevOps
docker
volumes
Axelat Sep 6, 2023
Hard
6 votes486 runs0 comment

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

DevOps
docker-compose
Axelat Sep 6, 2023
Medium
6 votes457 runs0 comment

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

DevOps
docker
files
Axelat Sep 6, 2023
Medium
5 votes1030 runs0 comment

List all Docker images on your system

DevOps
docker
images
Axelat Aug 25, 2023
Easy
4 votes1006 runs0 comment

Explain why it is advisable to minimize the number of layers when creating a Docker image.

DevOps
docker
layers
Axelat Aug 25, 2023
Medium
4 votes954 runs
1 comment

View the layer history of a Docker image

DevOps
docker
image
Axelat Aug 25, 2023
Easy
4 votes888 runs0 comment

Redirect a specific host port to a container port in Docker

DevOps
docker
ports
Axelat Aug 25, 2023
Easy
4 votes716 runs0 comment

What are the `-it` options used for when running a Docker container with `docker run`?

DevOps
docker
terminal
Axelat Aug 25, 2023
Easy
3 votes893 runs0 comment

List all running containers with Docker

DevOps
docker
commands
Axelat Aug 25, 2023
Easy
3 votes486 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 votes470 runs0 comment

What is the main use of Docker Compose?

DevOps
docker
docker-compose
Axelat Sep 6, 2023
Easy
3 votes343 runs0 comment

What's the main difference between a bind mount and a Docker volume?

DevOps
docker
bind mount
volume
Axelat Aug 25, 2023
Easy
2 votes937 runs0 comment

What is the purpose of the `docker image prune` command?

DevOps
docker
images
Axelat Aug 25, 2023
Easy
2 votes928 runs0 comment

Create a Docker volume

DevOps
docker
volume
Axelat Aug 25, 2023
Easy
2 votes926 runs0 comment

Force the shutdown of a container that was no longer responding

DevOps
docker
container
Axelat Aug 25, 2023
Easy
2 votes923 runs0 comment

Which instruction in a `Dockerfile` defines the user who will execute the following commands?

DevOps
dockerfile
user
Axelat Aug 25, 2023
Easy
2 votes905 runs0 comment

Why should you avoid running a container's main process as root?

DevOps
security
docker
Axelat Aug 25, 2023
Docker tests