How to get the true image url from oss upload file? Not dynamic signatured.

[Velvet0314]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

Dify version

1.1.3

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

From previous issues #16693 , I change my file url with my own domain.

And now workflow can work with no error.

But actually I upload image from oss, because in #16266, I learned that dify can only get the url property from oss upload files.

I upload oss image file and it is like this:

{
  "sketch": {
    "dify_model_identity": "__dify__file__",
    "id": null,
    "tenant_id": "c7086304-4e22-44b1-90dd-a541aad38b10",
    "type": "image",
    "transfer_method": "remote_url",
    "remote_url": "https://dify.velvet-notes.org/files/750a95a3-ad57-4455-9dec-1ba7bcaea0c6/file-preview?timestamp=1742955702&nonce=a9e82007a4693eeb3126e6110236e8d6&sign=8PHO09sHq3Rh9Cyg6faPe5JtEQNvsJvfSy4A3DSYKCw=",
    "related_id": "750a95a3-ad57-4455-9dec-1ba7bcaea0c6",
    "filename": "Sketch1.png",
    "extension": ".png",
    "mime_type": "image/png",
    "size": 6695,
    "url": "https://dify.velvet-notes.org/files/750a95a3-ad57-4455-9dec-1ba7bcaea0c6/file-preview?timestamp=1742955702&nonce=a9e82007a4693eeb3126e6110236e8d6&sign=8PHO09sHq3Rh9Cyg6faPe5JtEQNvsJvfSy4A3DSYKCw="
  },
  "sys.query": "1",
  "sys.files": [],
  "sys.conversation_id": "10c42afb-b422-44d2-b08a-0011f57dcea9",
  "sys.user_id": "8c37c467-7fc0-4e41-8219-a60a91f80d34",
  "sys.dialogue_count": 0,
  "sys.app_id": "cc6c4a85-66ee-4e97-94be-2637a6369bea",
  "sys.workflow_id": "91a01099-477b-4b38-9750-edd57f78a472",
  "sys.workflow_run_id": "69aa621a-cdde-4a78-94e8-a97543d8f0ed"
}

url is dynamically signatured: https://dify.velvet-notes.org/files/750a95a3-ad57-4455-9dec-1ba7bcaea0c6/file-preview?timestamp=1742955702&nonce=a9e82007a4693eeb3126e6110236e8d6&sign=8PHO09sHq3Rh9Cyg6faPe5JtEQNvsJvfSy4A3DSYKCw=

But what I want the url is what input in the upload box:

https://wikkii.oss-cn-qingdao.aliyuncs.com/sketch/Sketch1.png

I know that upload the image will create a local file in docker/volumes/app/storage/upload_files, the dynamic signatured url is invalid for my following node input, and it's valid like this https://wikkii.oss-cn-qingdao.aliyuncs.com/sketch/Sketch1.png, how can I get the url I want?

2. Additional context or comments

No response