Contents in the container's bind-mounted dir keep unchanged after mounting/umounting removable drive from the host - docker

Question

I want to dynamically change the contents in the container's directory according to the mounted removable USB disks. To fulfill this, I do the following steps.
Run the container with -v option, which mount the host directory (/mnt) into container (/share). Assume the name of the new container is test. The command should look like docker run --name test -d -v /mnt:/share ubuntu:latest.
Inspect the contents via docker exec -it test /usr/bin/bash. For now, the /share is empty.
mount the USB disk to host. Execute mount /dev/sdxY /mntcommand. the /mnt directory on the host now contains files and directories which are stored on the removable USB disk.
Inspect the contents in the containers again. The /share directory in the container is still empty. Nothing has been changed at all.
If I do this reversely: 1) first mount the USB disk to host, 2) run the container, 3) umount the USB disk. The contents in the container keep remained, but the /mnt directory on the host is swept.
Do docker has some mechanism to keep the contents synchronous across the container and the host after I mount/umount the disk.
docker info:
Containers: 2
Running: 2
Paused: 0
Stopped: 0
Images: 1
Server Version: 17.03.1-ce
Storage Driver: aufs
Root Dir: /var/lib/docker/aufs
Backing Filesystem: extfs
Dirs: 14
Dirperm1 Supported: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host macvlan null overlay
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 4ab9917febca54791c5f071a9d1f404867857fcc
runc version: 54296cf40ad8143b62dbcaa1d90e520a2136ddfe
init version: 949e6fa
Security Options:
apparmor
seccomp
Profile: default
Kernel Version: 4.8.0-46-generic
Operating System: Ubuntu 16.04.2 LTS
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 7.684 GiB
Name: tri-xps
ID: LMPY:EGYU:QUAF:DPUF:GZNR:AHFS:URFD:EFW3:5DFV:WHR3:NAYJ:PKQV
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
WARNING: No swap limit support
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false

Answer 1

You can use --device option for accessing usb device directly within container.
docker run -t -i --device=/dev/ttyUSB0 ubuntu bash
More documentation available at https://docs.docker.com/engine/reference/commandline/run/#add-host-device-to-container---device

Answer 2

Sorry for my late post. After creating an issue on docker's official github page. #cpuguy83 gave me the answer. https://github.com/moby/moby/issues/32512.
To make the the mount operations propagate to the container, append slave flag to -v options. e.g:
-v media/usb:/smb_share:slave
For more information, check HERE.