Capitalize environment variable

hinerm · hinerm · commit 265a3457f5e1 · 2021-06-22T11:49:17.000-05:00
diff --git a/github-action-build.sh b/github-action-build.sh
@@ -102,7 +102,7 @@ EOL
 	fi
 
 	# Install GPG on OSX/macOS
-	if [ ${runner_os} = 'macOS' ]; then
+	if [ ${RUNNER_OS} = 'macOS' ]; then
 		HOMEBREW_NO_AUTO_UPDATE=1 brew install gnupg2
 	fi
 
