DCA · Question #134
Is this statement correct? Solution: A Dockerfile provides instructions for building a Docker image
The correct answer is B. No. A Dockerfile contains the instructions for building an image, but the actual building process is performed by the Docker daemon using the Dockerfile as input.
Question
Is this statement correct? Solution: A Dockerfile provides instructions for building a Docker image
Options
- AYes
- BNo
How the community answered
(25 responses)- A12% (3)
- B88% (22)
Why each option
A Dockerfile contains the instructions for building an image, but the actual building process is performed by the Docker daemon using the Dockerfile as input.
While a Dockerfile is essential for image creation, it acts as a blueprint or script; the actual image construction is a process carried out by the Docker engine based on the Dockerfile's instructions.
A Dockerfile provides a set of instructions (e.g., FROM, RUN, COPY) that define the steps to create a Docker image. However, the Dockerfile itself does not 'build' the image; rather, the `docker build` command executed by the Docker daemon interprets these instructions to construct the image.
Concept tested: Dockerfile purpose and Docker image building
Source: https://docs.docker.com/reference/dockerfile/
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