Which command allows you to create a new Docker image by executing a Dockerfile?

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The command that allows you to create a new Docker image by executing a Dockerfile is indeed "docker build." This command processes the instructions specified in the Dockerfile, which typically includes information about the base image to use, files to copy, command to run, and environment variables to set, among other configurations.

When you run "docker build," Docker reads the Dockerfile step by step. For each instruction in the Dockerfile, it creates a layer in the image, which allows for efficient reuse and caching. The end result of this process is a new image that can then be used to create containers.

Other commands serve different purposes that do not relate to the image creation process from a Dockerfile. For example, "docker run" is used to create and start a container from an image, "docker commit" is used to create a new image from a modified container, and "docker create" is used to create a new container without starting it. Each of these commands has its specific use cases but does not facilitate the process of building an image from a Dockerfile like "docker build" does.

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