This repo contains OpenFaaS functions, using Azure Event Grid for backend messaging, that convert a tweeted picture into a black and white one and submit the result back as a Twitter response.
Be sure to create an env.list file that your OpenFaaS functions can use with the following values:
azure_blob_account=your_azure_blob_account_name
azure_blob_account_key=your_azure_blob_account_key
consumer_key=your_twitter_app_consumer_key
consumer_secret=your_twitter_app_consumer_secret
access_token=your_twitter_app_access_token
access_token_secret=your_twitter_app_access_token_secret
You can create a Twitter app for your own bot at https://apps.twitter.com/app/new