chore(shell): auto cp .env form .env.example when debug

* chore(shell): auto cp .env form .env.example when debug
* chore(docker): using default env example if env not exit when debug app

See merge request: !910

backend/domain/workflow/crossdomain/model/model.go

@@ -20,6 +20,7 @@ import (
 	"context"
 
 	"github.com/cloudwego/eino/components/model"
+
 	"github.com/coze-dev/coze-studio/backend/infra/contract/modelmgr"
 )