300-910 · Question #8
What is the best description of a docker file?
The correct answer is A. Text document used to build an image.. A Dockerfile is a plain text document containing a set of instructions that the Docker engine uses to automatically build a Docker image.
Question
Exhibits
Options
- AText document used to build an image.
- BMessage Daemon files.
- CSoftware used to manage containers.
- DRepository for docker images.
How the community answered
(19 responses)- A95% (18)
- D5% (1)
Why each option
A Dockerfile is a plain text document containing a set of instructions that the Docker engine uses to automatically build a Docker image.
A Dockerfile is a script composed of various commands (instructions) that are executed sequentially by the Docker daemon to assemble a Docker image. It acts as a blueprint, defining the base image, necessary files, environment setup, and commands to run.
Message Daemon files are typically related to background processes or messaging systems, which is unrelated to a Dockerfile's purpose.
Docker itself (the Docker Engine) is the software used to manage containers, not a Dockerfile, which is a configuration file.
A repository (like Docker Hub or a private registry) stores Docker images, while a Dockerfile is used to *create* an image.
Concept tested: Dockerfile definition and purpose
Source: https://docs.docker.com/engine/reference/builder/
Topics
Community Discussion
No community discussion yet for this question.