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LFCA · Question #29

What file is created to assemble a Docker image, which contains all the commands a user has to run to make the image from start to finish?

The correct answer is B. Dockerfile. A Dockerfile is a text file containing all the commands, in order, that a user could call on the command line to assemble a Docker image. It serves as a blueprint for building Docker images.

Submitted by devops_kid· May 4, 2026DevOps Fundamentals

Question

What file is created to assemble a Docker image, which contains all the commands a user has to run to make the image from start to finish?

Options

  • ADockerBuild
  • BDockerfile
  • CBuildFile
  • DImageFile

How the community answered

(28 responses)
  • A
    4% (1)
  • B
    93% (26)
  • D
    4% (1)

Why each option

A Dockerfile is a text file containing all the commands, in order, that a user could call on the command line to assemble a Docker image. It serves as a blueprint for building Docker images.

ADockerBuild

There is no standard Docker file named `DockerBuild`; this is a made-up term.

BDockerfileCorrect

A Dockerfile is a plain text file that contains a series of instructions that Docker reads to automate the process of building a Docker image. Each instruction in the Dockerfile corresponds to a command that is executed to create a layer in the final image, defining the environment, dependencies, and application code.

CBuildFile

While it describes the function, `BuildFile` is not the specific, standardized name for the file used by Docker to build images.

DImageFile

There is no standard Docker file named `ImageFile`; this term might refer to the output of the build process but not the input instructions.

Concept tested: Dockerfile for image creation

Source: https://docs.docker.com/engine/reference/builder/

Topics

#Docker#Dockerfile#Image Building#Containerization

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