问在无权限的基于Ubuntu的Docker容器中使用gcsfuse拒绝权限

EN

FROM ubuntu:18.04

RUN apt-get update
RUN apt-get install -y gnupg lsb-release wget

RUN lsb_release -c -s > /tmp/lsb_release
RUN GCSFUSE_REPO=$(cat /tmp/lsb_release); echo "deb http://packages.cloud.google.com/apt gcsfuse-$GCSFUSE_REPO main" | tee /etc/apt/sources.list.d/gcsfuse.list
RUN wget -O - https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -

RUN apt-get update
RUN apt-get install -y gcsfuse

docker run -it --rm \
--device /dev/fuse \
--cap-add SYS_ADMIN \ 
-v /path/in/host/to/key.json:/path/to/key.json \
-e GOOGLE_APPLICATION_CREDENTIALS=/path/to/key.json my_image:0.1 /bin/bash

mkdir /root/gruik
gcsfuse bucket_name /root/gruik/

Using mount point: /root/gruik
Opening GCS connection...
Mounting file system...
daemonize.Run: readFromProcess: sub-process: mountWithArgs: mountWithConn: Mount: mount: permission denied