Docker quiz

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

What environment variables can you set in a Dockerfile?

1. What environment variables can you set in a Dockerfile?
2. What is a Docker volume?
3. What is the difference between a Docker image and a container?
4. What does `RUN` do in a Dockerfile?
5. What is Docker?
6. What is the `COPY` vs `ADD` instruction in Dockerfile?
7. What does `docker exec -it <container> bash` do?
8. What does `docker logs` show?
9. What is the purpose of `.dockerignore`?
10. What is the Docker daemon?
11. What does `docker-compose up` do?
12. What does `docker build` do?

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