Which of the following commands is used to rebuild services in Docker Compose?

Prepare for the Docker Foundations Test. Review essential Docker concepts with multiple choice questions, each with hints and explanations. Ace your exam!

The command that is used to rebuild services in Docker Compose is "docker compose up --build." This command initiates or updates the services defined in a Docker Compose file, and the addition of the "--build" flag specifically instructs Docker Compose to rebuild the images for the services before starting the containers.

When you run "docker compose up --build," Docker Compose examines the current state of the service images and builds them again if there are any changes detected in the Dockerfile or the context directory. This ensures that you are using the latest version of your service code and dependencies. It's important in a development workflow where code might frequently change, and you want those changes reflected in the running containers.

In contrast, "docker compose rebuild" is not a recognized command in the current Docker Compose syntax, and while "docker compose create" is used to create the containers without starting them, it does not handle rebuilding images. "docker build" is a command used for building a Docker image from a Dockerfile but does not directly relate to Docker Compose services. Thus, "docker compose up --build" is the correct choice for rebuilding services in the context of Docker Compose.

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