Upload Images to DO Volume attached to Droplet

I’m currently building a blog using a MEVN stack. My Kubernetes cluster runs on DO (otherwise I wouldn’t be here).

I’ve been trying to figure out how exactly to get my images into this volume I created and I have no idea how to do it. I also don’t know how I would retrieve the images as well.

I’ll show you guys my node backend to show you guys what I’m doing so far.

const express = require('express');
const path = require('path');
const Posts = require('../db/models/post');
const router = express.Router();
const multer = require('multer');

const storage = multer.diskStorage({
  destination: function (req, file, cb) {
    cb(null, './uploads/');
  },
  filename: function (req, file, cb) {
    cb(null, file.originalname)
  }
});

const fileFilter = (req, file, cb) => {
  if (file.mimetype === 'image/jpeg' || file.mimetype === 'image/png') {
    cb(null, true);
  }
  else {
    cb(null, false);
  }
};

const upload = multer({
  storage: storage,
  limit: {
    fileSize: 1024 * 1024 * 5
  },
  fileFilter: fileFilter
});

router.post("/createPost",upload.single('img'), (req, res) => {
  let currDate = new Date().toISOString();
  let post = req.body;
  post.postId = Math.floor((Math.random() * 9999999) + 1000000);
  post.date = currDate;
  post.img = req.file.path;
  post = new Posts(post);
  console.log(req.body);

  post.save().then(() => {
    res.status(200).send("Post has been uploaded");
  })
    .catch(() => {
      res.status(400).send("unable to post");
    })

});

Locally all my files will save to /uploads/ but how do I configure it to save to my volume and then how do I get the images from my volume as well?