Containerized Activities in Durable Workflows - Part 1

In this series I want to show how we can build a serverless workflow using Azure Durable Functions, but implement some of the activities in that workflow using containers with Azure Container Instances. This is something I promised to write about a long time ago but it turned out to be fairly complex to implement. I've finally got enough working to be able to share a basic demo app (special thanks to Noel Bundick for some awesome sample code that got me through some sticky bits).