From d3cb1fec792f5e80d773027136c9cb087f21b974 Mon Sep 17 00:00:00 2001
From: Petr Hracek <phracek@redhat.com>
Date: Tue, 5 Apr 2022 16:41:15 +0200
Subject: [PATCH] Fix shell substitution (#13)

Signed-off-by: Petr "Stone" Hracek <phracek@redhat.com>
---
 action.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/action.yml b/action.yml
index fcae9af..f5d1271 100644
--- a/action.yml
+++ b/action.yml
@@ -86,7 +86,8 @@ runs:
         if [ ${{ inputs.dockerfile }} == Dockerfile ]; then
           suffix='centos7'
         else
-          suffix=${inputs.dockerfile##*.}
+          df="${{ inputs.dockerfile }}"
+          suffix=${df##*.}
         fi
         echo "::set-output name=suffix::$suffix"