Are you trying to mount a directory onto a file (or vice-versa)?

I have a docker with version `17.06.0-ce`. When I trying to install NGINX using docker with command: docker run -p 80:80 -p 8080:8080 --name nginx -v $PWD/www:/www -v $PWD/conf/nginx.conf:/etc/nginx/nginx.conf -v $PWD/logs:/wwwlogs -d nginx:latest It shows that > docker: Error response from daemon: oci runtime error: > container_linux.go:262: starting container process caused > "process_linux.go:339: container init caused \"rootfs_linux.go:57: > mounting \\\"/appdata/nginx/conf/nginx.conf\\\" to rootfs > \\\"/var/lib/docker/aufs/mnt/dcea22444e9ffda114593b18fc8b574adfada06947385aedc2ac09f199188fa0\\\" > at > \\\"/var/lib/docker/aufs/mnt/dcea22444e9ffda114593b18fc8b574adfada06947385aedc2ac09f199188fa0/etc/nginx/nginx.conf\\\" > caused \\\"not a directory\\\"\"" > : Are you trying to mount a directory onto a file (or vice-versa)? Check if the specified host path exists and is the expected type. If do not mount the `nginx.conf` file, everything is okay. So, how can I mount the configuration file?