We will have to create a middleware that uploads an image to cloudinary and returns it's image url

Create an account in cloudinary and choose programmable media.

Now go back to editor and create 3 variables in dotev file with these informations: CLOUD_NAME, API_KEY, API_SECRET.
You get that from cloudinary dashboard.

Create a folder 'utils' with a 'cloudinary.js' file.

Create a 'controller' folder with a 'cloudinaryMiddleware.js' file.

Now you just have to import and place it in your REST API like this: