docs/compose/reference/build.md

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build

Usage: build [options] [SERVICE...]

Options:
--force-rm  Always remove intermediate containers.
--no-cache  Do not use cache when building the image.
--pull      Always attempt to pull a newer version of the image.

Services are built once and then tagged as project_service, e.g., composetest_db. If you change a service's Dockerfile or the contents of its build directory, run docker-compose build to rebuild it.