fix: build

backend/cmd/config.go

@@ -13,6 +13,7 @@ type cliParams struct {
 	ListenAddr   string
 	ListenPort   int
 	DataDir      string
+	StaticDir    string
 	SettingsFile string
 }
 
@@ -41,5 +42,16 @@ func (p *cliParams) Validate() error {
 		return fmt.Errorf("failed to create images directory: %w", err)
 	}
 
+	// Validate Static Directory
+	if p.StaticDir != "" {
+		info, err := os.Stat(p.StaticDir)
+		if err != nil {
+			return fmt.Errorf("failed to access static directory: %w", err)
+		}
+		if !info.IsDir() {
+			return fmt.Errorf("static directory is not a directory: %s", p.StaticDir)
+		}
+	}
+
 	return nil
 }