Merge pull request #7591 from hashicorp/doc_docker
docker builder: document entrypoint option
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@ -214,7 +214,13 @@ You must specify (only) one of `commit`, `discard`, or `export_path`.
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using a linux container, and
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`["-d", "-i", "-t", "--entrypoint=powershell", "--", "{{.Image}}"]` if you
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are running a windows container. {{.Image}} is a template variable that
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corresponds to the `image` template option.
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corresponds to the `image` template option. Passing the entrypoint option
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this way will make it the default entrypoint of the resulting image, so
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running `docker run -it --rm $IMAGE` will start the docker image from the
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`/bin/sh` shell interpreter; you could run a script or another shell by
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running `docker run -it --rm $IMAGE -c /bin/bash`. If your docker image
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embeds a binary intended to be run often, you should consider changing the
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default entrypoint to point to it.
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- `volumes` (map of strings to strings) - A mapping of additional volumes to
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mount into this container. The key of the object is the host path, the
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