Actually use gitea source

Signed-off-by: Lukas Bachschwell <lukas@lbsfilm.at>

main.go

@@ -35,7 +35,16 @@ func main() {
 }
 
 func update(version string) error {
-	latest, found, err := selfupdate.DetectLatest("lbsadmin/goselfupdatetest")
+	source, _ := selfupdate.NewGiteaSource(selfupdate.GiteaConfig{BaseURL: "https://git.lbsfilm.at/"})
+	updater, err := selfupdate.NewUpdater(selfupdate.Config{
+		Source:    source,
+		Validator: nil,
+		OS:        runtime.GOOS,
+		Arch:      runtime.GOARCH,
+		Arm:       0,
+	})
+
+	latest, found, err := updater.DetectLatest("lbsadmin/goselfupdatetest")
 	if err != nil {
 		return fmt.Errorf("error occurred while detecting version: %v", err)
 	}
@@ -52,7 +61,7 @@ func update(version string) error {
 	if err != nil {
 		return errors.New("could not locate executable path")
 	}
-	if err := selfupdate.UpdateTo(latest.AssetURL, latest.AssetName, exe); err != nil {
+	if err := updater.UpdateTo(latest, exe); err != nil {
 		return fmt.Errorf("error occurred while updating binary: %v", err)
 	}
 	log.Printf("Successfully updated to version %s", latest.Version())