If you encounter an empty directory when mounting a local directory using the -v option when deploying Docker on Windows 10, there may be several possible reasons:
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Incorrect mounting path: Please make sure to correctly specify the path of the local directory in the Docker command, and ensure that the directory exists and has read and write permissions. On Windows 10, the local directory path should use backslashes \ as separators, for example: docker run -v C:\myfolder:/container/folder image.
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Windows 10 file sharing issue: When using Docker on Windows 10, make sure that the file sharing feature is enabled. In the settings of the Docker Desktop application, you can configure shared folders in the "Shared Drives" tab, so that Docker can access files on the host machine.
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File permission issue in the container: In a Docker container, the file system permissions may be different from the host machine. If the mounted local directory does not have the correct read and write permissions in the container, it may result in an empty directory. You can use the chmod command to modify the file permissions in the container, for example: docker exec -it <container_name> chmod 777 /container/folder.
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Docker version issue: If you are using an older version of Docker, you may encounter the issue of mounting an empty directory for local directories. Please try upgrading to the latest version of Docker.
If none of the above methods solve the problem, it is recommended to check the Docker logs for more detailed information or try manually creating files in the Docker container to confirm if the file system is working properly.