How to set Cloudinary upload option

sure, but this is not exactly what I want.
I want all my files to be uploaded into a specific directory, which means I need to populate the customConfig parameter somehow.

Looking at the code, it seems that customConfig is always empty: was it on purpose?

Anyway, being strapi open-source, I was quicky:neutral_face: able to create a custom provider based on the official one, configured like so:

// strapi-provider-upload-cloudinary
let upload_config = {}
module.exports = {
  init(config) {
   // configuration for cloudinary.config()
   cloudinary.config(config.account_config); 
 
   // configuration for cloudinary.upload()
   // https://cloudinary.com/documentation/image_upload_api_reference
   upload_config = config.upload_config;

    return {
      upload(file) {
        return new Promise((resolve, reject) => {
          const upload_stream = cloudinary.uploader.upload_stream(
            { resource_type: 'auto', public_id: file.hash, ...upload_config }

With the following configuration:

// plugins.js
upload: {
        provider: 'cloudinary',
        providerOptions: {
            account_config: {
                cloud_name: env('CLOUDINARY_NAME'),
                api_key: env('CLOUDINARY_KEY'),
                api_secret: env('CLOUDINARY_SECRET'),
            },
            upload_config: {
                folder: env('CLOUDINARY_FOLDER'),
               // ... and some
            }
        },
    }

I think this is the way it was intended. Let me know. I can send you a PR if you want to implement my solution.