moby: Unable to read a symlink in a mounted volume from inside a Windows Container

Description On Windows Server 2016 host created a symlink pointing to a text file inside working directory and mounted the working directory as a volume for windowsservercore container. Accessing the symlink from Windows host works but fails from within the container

Steps to reproduce the issue:

1. Create a text file in temp/work directory PS C:\wd\test> echo "Symlink Test" > test.txt
2. Create a symlink pointing to the text file PS C:\wd\test> cmd /c mklink symtmp.txt test.txt
3. Run windowsservercore container and mount the working directory as volume docker run --rm -v c:\wd\test:c:\wd\test -it microsoft/windowsservercore cmd

Describe the results you received: Inside the container run

PS C:\> type C:\wd\test\symtmp.txt
type : Could not find a part of the path 'C:\wd\test\symtmp.txt'.
At line:1 char:1
+ type C:\wd\test\symtmp.txt
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (C:\wd\test\symtmp.txt:String) [Get-Content], DirectoryNotFoundException
    + FullyQualifiedErrorId : GetContentReaderDirectoryNotFoundError,Microsoft.PowerShell.Commands.GetContentCommand

Describe the results you expected:

PS C:\wd\test> type .\symtmp.txt
Symlink Test

Additional information you deem important (e.g. issue happens only occasionally):

Output of docker version:

PS C:\wd> docker version
Client:
 Version:      1.12.2-cs2-ws-beta
 API version:  1.25
 Go version:   go1.7.1
 Git commit:   050b611
 Built:        Tue Oct 11 02:35:40 2016
 OS/Arch:      windows/amd64

Server:
 Version:      1.12.2-cs2-ws-beta
 API version:  1.25
 Go version:   go1.7.1
 Git commit:   050b611
 Built:        Tue Oct 11 02:35:40 2016
 OS/Arch:      windows/amd64

Output of docker info:

PS C:\wd> docker info
Containers: 0
 Running: 0
 Paused: 0
 Stopped: 0
Images: 37
Server Version: 1.12.2-cs2-ws-beta
Storage Driver: windowsfilter
 Windows:
Logging Driver: json-file
Plugins:
 Volume: local
 Network: nat null overlay transparent
Swarm: inactive
Default Isolation: process
Kernel Version: 10.0 14393 (14393.447.amd64fre.rs1_release_inmarket.161102-0100)
Operating System: Windows Server 2016 Standard Evaluation
OSType: windows
Architecture: x86_64
CPUs: 4
Total Memory: 8 GiB
Name: WIN-V1B1M3827A2
ID: YWMF:AR23:AK2D:W3KJ:W22Z:6KQ3:LTPR:TOJP:ZCD3:WM3Z:NHRA:RLM6
Docker Root Dir: C:\ProgramData\docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false

Additional environment details (AWS, VirtualBox, physical, etc.):

1. Physical
2. winver : Windows Server 2016 Version 1607 (OS Build 14393.447)