Docker: Mounting external host directory as a volume (Windows hosts)

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In CMD window:

> docker run -it --rm -v %cd%:/opt/ mydocker

In Power Shell:

> docker run -it --rm -v ${PWD}:/opt/ mydocker

In any case the path to the folder must only contain [a-zA-Z0-9_.-] character so no spaces, no Hebrew characters, etc.