Example for a go project?

Why would I use a Docker container for my function app here? https://github.com/Azure/actions-workflow-samples/blob/master/FunctionApp/linux-container-functionapp-on-azure.yml https://docs.microsoft.com/en-us/azure/azure-functions/functions-create-function-linux-custom-image appears to make everything more complicated/slow with a container build and store phase. I am puzzled why people do it.

I'm looking for a simple container image with `func` so I can do a `make deploy` from https://github.com/kaihendry/count/blob/azure-functions/.github/workflows/azure-func.yml

Is that possible?