Don't remove parent directory config doesnt like this

os161-container/helpers.sh

@@ -24,7 +24,7 @@ build_k_helper() {
 	cd $OS161_DIR
 	mkdir /os-compile 2> /dev/null
 	cp -r /kernel/kern/* $OS161_DIR/kern/
-	rm -rf $OS161_DIR/kern/compile 2> /dev/null
+	rm -rf $OS161_DIR/kern/compile/* 2> /dev/null
 	set -e
 	# Configure - step 1
 	echo "[CS350] $1 Configuring Kernel..."