2021-06-08 09:39:49 +02:00
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## Description
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Services are built once and then tagged, by default as `project_service`.
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If the Compose file specifies an
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[image](https://github.com/compose-spec/compose-spec/blob/master/spec.md#image) name,
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the image is tagged with that name, substituting any variables beforehand. See
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[variable interpolation](https://github.com/compose-spec/compose-spec/blob/master/spec.md#interpolation).
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If you change a service's `Dockerfile` or the contents of its build directory,
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run `docker compose build` to rebuild it.
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