From 0892b5e140336e6cbaaacd35f56b6139dde51cd1 Mon Sep 17 00:00:00 2001
From: Tim van Katwijk <timvankatwijk@hotmail.com>
Date: Mon, 26 Dec 2022 21:18:52 +0100
Subject: [PATCH] stringIO always needs a string.

Signed-off-by: Tim van Katwijk <timvankatwijk@hotmail.com>
---
 dockerfile_parse/util.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dockerfile_parse/util.py b/dockerfile_parse/util.py
index af8f4d9..c479924 100644
--- a/dockerfile_parse/util.py
+++ b/dockerfile_parse/util.py
@@ -48,7 +48,7 @@ def __init__(self, s, args=None, envs=None):
         :param envs: dict, environment variables to use; if None, do not
             attempt substitution
         """
-        self.stream = StringIO(s)
+        self.stream = StringIO(str(s))
         self.args = args
         self.envs = envs