How do I add attachments to a Doctype by sending a request through the REST API?

[axis1410]

I am using a backend server and I want to upload attachments to “Issue” doctype by sending a POST request from the backend.

The backend api endpoint looks like this

app.post("/api/v1/issues", async (req: Request, res: Response) => {
	try {
		const issue_data = req.body;

		// const { attachments }: { attachments?: string[] } = issue_data;

		config.data = issue_data;
		config.url = `http://localhost:8080/api/resource/Issue`;
		config.method = "post";

		const response = await axios.request(config);
		res.json(response.data);
	} catch (error: any) {
		console.log(error.message);
		res.status(500).json({ message: "An error occurred while creating issue." });
	}
});

And the curl request from client app looks like this

curl --location 'http://localhost:3000/api/v1/issues' \
--header 'Content-Type: application/json' \
--header 'Cookie: authorization cookie here' \
--data-raw '{
    "subject": "New Problem",
    "doctype": "Issue",
    "naming_series": "ISS-.YYYY.-",
    "customer": "Palmer Productions Ltd.",
    "raised_by": "new@example.com",
    "description": "oiashdoiahdoiahsd",
    "attachments": [
        "https://google.com",
        "https://mail.google.com"
    ]
}
'

What can I do to upload the attachments on the form?