support .well-known dir

lib/web.go

@@ -54,13 +54,24 @@ func (f *Forgejo) GetFile(ctx context.Context, headers map[string]string, user,
 	return resp, nil
 }
 
-func UseAPI(bind string, f *Forgejo) (*http.Server, error) {
+func UseAPI(bind, wellKnown string, f *Forgejo) (*http.Server, error) {
 	if f == nil {
 		return nil, errors.New("forgejo is nil")
 	}
+	mux := http.NewServeMux()
+	if wellKnown != "" {
+		mux.Handle(
+			"/.well-known/",
+			http.StripPrefix(
+				"/.well-known/",
+				http.FileServer(http.Dir(wellKnown)),
+			),
+		)
+	}
+	mux.HandleFunc("/", f.handle)
 	s := &http.Server{
 		Addr:    bind,
-		Handler: http.HandlerFunc(f.handle),
+		Handler: mux,
 	}
 	return s, nil
 }