first commit

.go-builder/scripts/check-sync.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -u
+set -e
+
+if [ -d /etc/go-builder ]; then
+    diff -rq .go-builder /etc/go-builder
+    exit $?
+else
+    echo "check-sync is not running in builder's docker image. Skipping..."
+    exit 0
+fi