Use random performer image if none provided

pkg/api/images.go

@@ -0,0 +1,19 @@
+package api
+
+import (
+	"math/rand"
+
+	"github.com/gobuffalo/packr/v2"
+)
+
+var performerBox *packr.Box
+
+func initialiseImages() {
+	performerBox = packr.New("Performer Box", "../../static/performer")
+}
+
+func getRandomPerformerImage() ([]byte, error) {
+	imageFiles := performerBox.List()
+	index := rand.Intn(len(imageFiles))
+	return performerBox.Find(imageFiles[index])
+}