From d4080244b0f69658f5d6ba101bb774c403c6d153 Mon Sep 17 00:00:00 2001
From: Israel Shirk <israelshirk@gmail.com>
Date: Mon, 27 Oct 2014 20:59:21 -0600
Subject: [PATCH] Resolves issue where docker communicator mishandled symlinks
 by treating them as files

---
 builder/docker/communicator.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/builder/docker/communicator.go b/builder/docker/communicator.go
index d5f0eb713..36ba291d3 100644
--- a/builder/docker/communicator.go
+++ b/builder/docker/communicator.go
@@ -117,6 +117,16 @@ func (c *Communicator) UploadDir(dst string, src string, exclude []string) error
 			return os.MkdirAll(hostpath, info.Mode())
 		}
 
+		if info.Mode() & os.ModeSymlink == os.ModeSymlink {
+			dest, err := os.Readlink(path)
+
+			if err != nil {
+				return err
+			}
+
+			return os.Symlink(dest, hostpath)
+		}
+
 		// It is a file, copy it over, including mode.
 		src, err := os.Open(path)
 		if err != nil {