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

55 interview questions on Dockerfor developers (2026)

Test your technical skills before an interview of Docker with 55 corrected questions. Beginner, Intermediate or Expert level.

or
Technology
Profession
Test
Sort by
Newest
Most popular
Last review
Filter by
Published
3837
To review
1
55 questions
Hard
13 votes991 runs0 comment

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

DevOps
docker
networks
Axelat Sep 6, 2023
Medium
11 votes945 runs
1 comment

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

DevOps
dockerfile
docker
Axelat Sep 6, 2023
Medium
8 votes894 runs1 comment

Connect an existing container to a Docker network

DevOps
docker
network
Axelat Aug 29, 2023
Easy
5 votes872 runs0 comment

List all Docker volumes on a machine

DevOps
docker
volumes
Axelat Sep 6, 2023
Medium
4 votes920 runs0 comment

List all Docker images on your system

DevOps
docker
images
Axelat Aug 25, 2023
Easy
4 votes891 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
Easy
4 votes792 runs0 comment

Redirect a specific host port to a container port in Docker

DevOps
docker
ports
Axelat Aug 25, 2023
Medium
3 votes848 runs
1 comment

View the layer history of a Docker image

DevOps
docker
image
Axelat Aug 25, 2023
Easy
3 votes794 runs0 comment

List all running containers with Docker

DevOps
docker
commands
Axelat Aug 25, 2023
Easy
3 votes659 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
2 votes833 runs0 comment

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

DevOps
docker
images
Axelat Aug 25, 2023
Easy
2 votes827 runs0 comment

Create a Docker volume

DevOps
docker
volume
Axelat Aug 25, 2023
Easy
2 votes824 runs0 comment

Force the shutdown of a container that was no longer responding

DevOps
docker
container
Axelat Aug 25, 2023
Easy
2 votes821 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 votes805 runs0 comment

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

DevOps
security
docker
Axelat Aug 25, 2023
Easy
2 votes329 runs0 comment

Inspect the details of a Docker image

DevOps
docker
image
Axelat Aug 25, 2023
Easy
2 votes308 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
1 vote827 runs0 comment

Create a container from an image without starting it immediately

DevOps
docker
container
Axelat Aug 25, 2023
Easy
1 vote799 runs0 comment

Define the base of a Docker image in a `Dockerfile`

DevOps
dockerfile
instruction
Axelat Aug 25, 2023
Easy
1 vote795 runs0 comment

What is Docker?

DevOps
containers
docker
Axelat Aug 25, 2023
Docker tests