Fix unbound variable.

cross-rs · Jan 1, 2020 · 0c07f3d · 0c07f3d
1 parent c946cf3
commit 0c07f3d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/build-docker-image.sh b/build-docker-image.sh
@@ -23,7 +23,7 @@ run() {
   fi
 }
 
-if [ -z "${1}" ]; then
+if [ -z "${1:-}" ]; then
   for t in Dockerfile.*; do
     run "${t##Dockerfile.}"
   done