Upload, Process and Return the file only using Functions

Just looking to do a simple quick in and out processing.

I cannot find any explanation from the official docs.

What I want to do on DigitalOceans Functions

e.g endpoint = my-namespace-url.doserverless.co/api/v1/web/bla-bla-bla/sample/processImage

This endpoint accepts a GET and a POST. When a GET should just respond with a string, say “Endpoint works”

But then, a POST request should do the steps below

1. Accept a multipart/form-data, namely an image
2. Process the image using Python, i.e reduce image dimension by a percentage
3. Return a response with processed image i.e in form of say base64 image string

I know how to do number 2. & 3. I’m currently struggling with 1. and can’t find ANY info anywhere that explains how to accept payloads etc.

Just a URL to any documentation on that will be helpful too.