You are probably right will have to take a look at our pipelines.
Glad you got sorted though.

Hope that helps :)

We use this task in a build pipeline

dotnet publish i365.Connect.Api/i365.Connect.Api.csproj --configuration $(buildConfiguration) --output $(Build.ArtifactStagingDirectory)/api --property:WebPublishMethod=Package --property:PackageAsSingleFile=true

We use this task to deploy

- task: AzureFunctionApp@1
displayName: 'iThink Connect Api Deploy'
enabled: true
inputs:
azureSubscription: '${{ parameters.azureSubscriptionName }}'
appName: '$(functions.name)'
appType: functionApp
package: '$(Pipeline.Workspace)/api/drop/api'