Docker quiz

Test your Docker knowledge with a free interactive quiz — 46 questions with answers and explanations. No signup needed to play.

What does the `EXPOSE` instruction do in a Dockerfile?

1. What does the `EXPOSE` instruction do in a Dockerfile?
2. What is Docker Hub?
3. What does `docker ps` show?
4. What is the `FROM` instruction in a Dockerfile?
5. What does `docker logs` show?
6. What is the purpose of `WORKDIR` in a Dockerfile?
7. What is a Docker volume?
8. What does `docker run` do?
9. What is the difference between a Docker image and a container?
10. What environment variables can you set in a Dockerfile?
11. What is the `COPY` vs `ADD` instruction in Dockerfile?
12. What is container orchestration?

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