mount path permission denied when running ./rundocker.sh quickstart

[BowenKwan]

I am trying to run FINN on a Ubuntu server.

When I run

./run-docker.sh quickstart

the following error occurs

docker: Error response from daemon: error while creating mount source path '/mnt/ccnas2/bdp/user/FINN/finn': mkdir /mnt/ccnas2/bdp/user/FINN: permission denied.

/mnt/ccnas2/bdp/user/FINN is the directory I git clone finn, and I have given it all permission by chmod 777, and both FINN and FINN/finn are owned by user and docker. I can run docker without root. The above docker run is with --privileged

I am wondering as /mnt/ccnas2/bdp/user/FINN/finn already exist, why would docker try to mkdir /mnt/ccnas2/bdp/user/FINN, and why there is permission denied even all permission are given, and docker run with --privileged.

I am wondering how can I mount the volume. Thank you very much for your help!