also copy static files to output directory

src/main.go

@@ -102,6 +102,40 @@ func main() {
 
 			f.Close()
 		}
+
+		staticFiles, err := filepath.Glob(*staticDir + "/**")
+		if err != nil {
+			log.Fatalf("could not get all static files from '%s': %s", *staticDir, err)
+		}
+		buf := []byte{}
+		for _, fileName := range staticFiles {
+			filePath := path.Join(*outputDir, fileName)
+			dir := path.Dir(filePath)
+			isDir := false
+			if info, err := os.Stat(fileName); err != nil {
+				log.Fatalf("could not stat file '%s': %s", fileName, err)
+			} else {
+				isDir = info.IsDir()
+				if isDir {
+					dir = filePath
+				}
+			}
+			if _, found := dirsCreated[dir]; !found {
+				if err := os.MkdirAll(dir, 0755); err != nil {
+					log.Fatalf("could not create directory '%s': %s", dir, err)
+				}
+			}
+			if isDir {
+				continue
+			}
+			buf, err = os.ReadFile(fileName)
+			if err != nil {
+				log.Fatalf("could not read static file '%s': %s", fileName, err)
+			}
+			if err := os.WriteFile(path.Join(*outputDir, fileName), buf, 0755); err != nil {
+				log.Fatalf("could not write static file '%s': %s", fileName, err)
+			}
+		}
 	}
 
 	if *listen != "" {