Split build.sh into two OS-specific scripts

build_windows.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+set -e
+cd $(dirname "$0")
+
+ORG_PATH="github.com/containernetworking"
+export REPO_PATH="${ORG_PATH}/plugins"
+
+if [ ! -h gopath/src/${REPO_PATH} ]; then
+	mkdir -p gopath/src/${ORG_PATH}
+	ln -s ../../../.. gopath/src/${REPO_PATH} || exit 255
+fi
+
+export GOPATH=${PWD}/gopath
+export GO="${GO:-go}"
+export GOOS=windows
+
+PLUGINS=$(cat plugins/windows_only.txt)
+for d in $PLUGINS; do
+  if [ -d "$d" ]; then
+    plugin="$(basename "$d").exe"
+    echo "  $plugin"
+    $GO build -o "${PWD}/bin/$plugin" "$@" "$REPO_PATH"/$d
+  fi
+done