Create bogus certificate if none passed

.env.example

@@ -1,6 +1,6 @@
 DATA_MOUNT_PATH=/mnt/storage
-CERTIFICATE_PATH=/example/server.crt
-KEYPAIR_PATH=/example/server.key
+CERTIFICATE_PATH=
+KEYPAIR_PATH=
 
 LISTEN_PORT=7777
 TRUSTED_KEYS=

OrbitalBeat.go

@@ -605,9 +605,16 @@ func main() {
 	if err != nil {
 		log.Fatal(err)
 	}
-	serverCertificate, err := tls.LoadX509KeyPair(*certificatePath, *keypairPath)
-	if err != nil {
-		log.Fatal(err)
+
+	var serverCertificate tls.Certificate
+
+	if *certificatePath != "" && *keypairPath != "" {
+		serverCertificate, err = tls.LoadX509KeyPair(*certificatePath, *keypairPath)
+		if err != nil {
+			log.Fatal(err)
+		}
+	} else {
+		serverCertificate = bogusCertificate
 	}
 
 	server := &http.Server{