build: improve regex for iidfile

improve the regex to match only at the beginning of the line.

It prevents matching "Copying %s $CHECKSUM" messages returned by the
containers/image copy process.

Closes: https://github.com/containers/podman/issues/10233

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/pkg/bindings/images/build_test.go b/pkg/bindings/images/build_test.go
new file mode 100644
index 000000000..e4035d5f8
--- /dev/null
+++ b/pkg/bindings/images/build_test.go
@@ -0,0 +1,17 @@
+package images
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestBuildMatchIID(t *testing.T) {
+	assert.True(t, iidRegex.MatchString("a883dafc480d466ee04e0d6da986bd78eb1fdd2178d04693723da3a8f95d42f4"))
+	assert.True(t, iidRegex.MatchString("3da3a8f95d42"))
+	assert.False(t, iidRegex.MatchString("3da3"))
+}
+
+func TestBuildNotMatchStatusMessage(t *testing.T) {
+	assert.False(t, iidRegex.MatchString("Copying config a883dafc480d466ee04e0d6da986bd78eb1fdd2178d04693723da3a8f95d42f4"))
+}