dockercompose 挂载的深刻理解，只能挂载文件夹，不能挂载文件啊！！！

docker-compose 挂载的深刻理解，只能挂载文件夹，不能挂载文件啊！！！

Docker mounting rootfs caused not a directory error

You can't mount a file into a directory in docker. That's why you are getting the error.

来源：

https://stackoverflow.com/questions/59697242/docker-mounting-rootfs-caused-not-a-directory-error

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