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.
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)- A4% (1)
- B93% (26)
- D4% (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.
There is no standard Docker file named `DockerBuild`; this is a made-up term.
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.
While it describes the function, `BuildFile` is not the specific, standardized name for the file used by Docker to build images.
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/
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