How can you rebuild a Docker image without using cache?

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Using the command docker build --no-cache is the correct method to rebuild a Docker image without using the cache. When this command is executed, Docker ignores any cached layers from previous builds, ensuring that every step of the Dockerfile runs fresh. This is particularly useful when changes have been made to files or when ensuring that the latest base images and dependencies are downloaded during the build process.

This method not only creates a new image but also guarantees that any updates or modifications in the base layers or dependencies are recognized and applied during the build. It prevents Docker from using potentially outdated layers that could lead to inconsistencies or failures in the built application.

While other options may seem plausible, they either do not specifically achieve the goal of avoiding the cache or rely on different mechanisms that do not guarantee a cache-free build. Using --force, for example, might imply a bypass of some checks, but does not necessarily ensure that cached layers are ignored. Similarly, using docker-compose build --no-cache would achieve a cache-free build in a Docker Compose context, but it is context-specific and not the universal command one might look for when directly building with Docker. Removing existing images would not rebuild the image; it merely deletes them before the new build,

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