Mongo DB Update Image Multer

Tenho o seguinte código em Node.js :
Controller:

'use strict';

const multer = require('multer');

require('../utils/date');

const mongoose = require('mongoose');

const noticiaSchema = mongoose.model('noticiaSchema');

exports.get = async (req, res) => {

  await noticiaSchema.find({})

    .then((ret) => {

      return res.status(200).send(ret);

    })

    .catch((err) => {

      return res.status(500).send(err);

    });

};

exports.getId = async (req, res) => {

  await noticiaSchema.find({ _id: req.params.id })

    .then((ret) => {

      return res.status(200).send(ret);

    })

    .catch((err) => {

      return res.status(500).send(err)

    });

};

exports.post = async (req, res) => {

  const User = req.body;

  console.log(User);

  

};

exports.delete = async (req, res) => {

  await noticiaSchema.deleteOne({ _id: req.params.id })

    .then((ret) => {

      return res.status(200).send(ret);

    })

    .catch((err) => {

      return res.status(500).send(err)

    })

};

exports.put = async (req, res) => {

  const obj = req.body;

  await noticiaSchema.update({ _id: req.params.id }, obj)

    .then((ret) => {

      return res.status(200).send(ret);

    })

    .catch((err) => {

      return res.status(500).send(err)

    });

};

Model:

'use strict';

const mongoose = require('mongoose');

const Schema = mongoose.Schema;

const noticiaSchema = new Schema({

  img: { data: Buffer, contentType: String }

}, {

  timestamps: true

});

module.exports = mongoose.model('noticiaSchema', noticiaSchema);

Routes:

'use strict';

var express = require('express');

var Image = require('../models/noticiasModel');

var ImageRouter = express.Router();

const controller = require('../controllers/noticiasController')

ImageRouter.get('/', controller.get);

ImageRouter.get('/:id', controller.getId);

ImageRouter.post('/', controller.post);

ImageRouter.delete('/:id', controller.delete);

ImageRouter.put('/:id', controller.put);

module.exports = ImageRouter;

APP:

'use strict';

const express = require('express');

const cors = require('cors');

const dotenv = require('dotenv');

dotenv.config();

const app = express();

const path = require('path');

const multer = require('multer');

// Middleware

app.use(express.json());

app.use(cors());

// Database

require('./configs/mongodbConnection');

// Load Models

const menuModel = require('./models/menuModel');

const noticiaModel = require('./models/noticiasModel');

// Load Routes

const apiVersion = '/api/v1';

const index = require('./routes/indexRoute');

const menuRoute = require('./routes/menuRoute');

const noticiaRoute = require('./routes/noticiasRoute');

app.use(apiVersion + '/', index);

app.use(apiVersion + '/menu', menuRoute);

app.use(apiVersion + '/uploads', express.static('uploads'));

app.use(apiVersion + '/image', noticiaRoute);

// app.use(apiVersion + '/image', ImageRouter);

module.exports = app;

Onde estou errando, e o que devo fazer para gravar uma imagem no banco de dados mongoDB, quando envio uma imagem pelo método post, ele me retorna vazio { }, e no meu console da minha view ele me retorna isso:

1. File {name: "download.png", lastModified: 1581429829167, lastModifiedDate: Tue Feb 11 2020 11:03:49 GMT-0300 (Horário Padrão de Brasília), webkitRelativePath: "", size: 4974, …}

  1. name: "download.png"
  2. lastModified: 1581429829167
  3. lastModifiedDate: Tue Feb 11 2020 11:03:49 GMT-0300 (Horário Padrão de Brasília) {}
  4. webkitRelativePath: ""
  5. size: 4974
  6. type: "image/png"

Desde já eu agradeço!