What purpose does the 'docker build' context serve?

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The 'docker build' context is crucial because it specifies the directory on the host system that contains all the files needed for building a Docker image. When a new image is built using the Dockerfile, the context includes not only the Dockerfile itself but also any files or directories that are referenced within it. This can include application source code, assets, and dependencies required for the build process.

When you execute a 'docker build' command, Docker sends the entire context to the Docker daemon. Therefore, it's essential that all necessary files are included in this context, or they will not be available during the image build process, which can lead to build failures. Designating the correct build context allows for efficient image creation and ensures that the resulting image contains all necessary components for the application to run properly in a containerized environment.

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