Automatic buffer poster based on image and text

This project needs a free buffer account [login to view URL] We have an item and text that is updated everyday with a script. And the goal is to autopost these 2 items to social media on daily basis, namely facebook, twitter and instagram. Buffer is used here because it has free account option. The final result would be a stable, automatic image and text feeder to buffer which will post the image and text posted on Facebook, instagram and twitter on daily basis