Docker and CI/CD · Junior · Question 3 of 75

What is a Dockerfile?

✓Correct answer: A text file with the steps to build an image
2A config file listing every container on a host
3A log file that a container writes while it runs

Explanation

Each instruction (FROM, COPY, RUN, CMD...) describes a build step. docker build executes them and produces an image.

Further reading

Docker Docs: Dockerfile reference ↗

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