Which command is commonly used to build a Docker image from a Dockerfile?

Building a Docker image from a Dockerfile is accomplished using the docker build command. This command processes the instructions included in the Dockerfile and compiles them into an image that can be used to create containers.

When you execute docker build, you specify the location of the Dockerfile and, if needed, the context, which represents the files required for building the image. This context is typically the directory containing the Dockerfile and any additional files referenced within it.

In contrast to the other commands listed, such as docker create, docker run, and docker exec, their purposes are different. docker create is used to create a container without starting it, docker run both creates and starts a container from an image, and docker exec allows you to run a command in a running container. Thus, docker build is distinctly designed for the creation of images, making it the correct choice for this scenario.