How can I deploy app settings from a file to an Azure Standard Logic App using YAML?

I am trying to deploy app settings to a standard logic app by reading the settings from a file.

I am using the Azure Logic Apps DevOps tasks (https://marketplace.visualstudio.com/items?itemName=ms-logicapps-ado.azure-logic-apps-devops-tasks) to deploy the workflow and other components. Everything works fine except that I need to keep the app settings in a separate file rather than embedding them directly in the YAML file.

I have tested the following approaches:

• Reading a JSON file with the app settings and passing its content to the deploy task, which hasn’t worked.
• Executing the command az logicapp config appsettings set with a file as input. The documentation suggests that the @filename syntax is available for Azure function apps but it doesn’t seem to work for logic apps.

Is there a workaround to use a file for app settings deployment, or must I include the app settings directly in the YAML file?

This is my current template YAML file showing two methods for configuring app settings: one with the AzureLogicAppsStandardRelease task (which requires inline JSON) and another using Azure CLI (which does not work with a file input):

YAMLCopied
parameters:
- name: logicAppName
  type: string
- name: parametersSubFolder
  type: string
- name: resourceGroupName
  type: string
- name: appSettings
  type: object
  default: []


jobs:
- job: logic_app_build
  displayName: 'Build and publish logic app'

  
  
  - task: AzureLogicAppsStandardBuild@0
    displayName: 'Azure Logic Apps Standard Build'
    inputs:
      sourceFolder: '$(Build.SourcesDirectory)'
      deploymentFolder: '$(System.DefaultWorkingDirectory)/deployment/'
      deploymentWorkflowParametersFile: '$(System.DefaultWorkingDirectory)/deployment/workflowparameters/${{ parameters.parametersSubFolder }}/parameters.json'
      archiveFile: '$(Build.ArtifactStagingDirectory)/$(Build.BuildId).zip'


  # Deploy the zip file
  - task: AzureLogicAppsStandardRelease@0
    displayName: 'Azure Logic Apps Standard Release'
    inputs:
        connectedServiceName: "serviceConnection"
        appName : '${{ parameters.resourceGroupName }}-${{ parameters.logicAppName }}'
        resourceGroupName: '${{ parameters.resourceGroupName }}'
        appSettings: |
          ${{ convertToJson(parameters.appSettings) }}
        package: '$(Build.ArtifactStagingDirectory)/$(Build.BuildId).zip'


  - task: AzureCLI@2
    inputs:
      azureSubscription:  "sc-sp-pi-${{ parameters.resourceGroupName }}-logicapps-deployment"
      scriptType: 'pscore'
      scriptLocation: 'inlineScript'
      inlineScript: |
        /usr/bin/az logicapp config appsettings set --resource-group ${{ parameters.resourceGroupName }} --name ${{ parameters.resourceGroupName }}-${{ parameters.logicAppName }} --settings "@$(System.DefaultWorkingDirectory)/deployment/workflowparameters/${{ parameters.parametersSubFolder }}/AppSettings.txt"