If we're on OS X then have Go cross compile for us

diff --git a/build.sh b/build.sh
index 9e816d2..cd21ba8 100755 (executable)
--- a/build.sh
+++ b/build.sh
@@ -1,6 +1,10 @@
 #!/usr/bin/env bash
 set -e
 
+if [ "$(uname)" == "Darwin" ]; then
+       export GOOS=linux
+fi
+
 ORG_PATH="github.com/containernetworking"
 export REPO_PATH="${ORG_PATH}/plugins"