Deploy Azure FunctionApp container to App Service as linuxFxVersion

Question

I am working on deploy isolated Azure Function App container on Azure App Service.

I have created App Service Plan:

"sku": {
    "name": "P1v2",
    "tier": "PremiumV2",
    "size": "P1v2",
    "family": "Pv2",
    "capacity": 1
},
"kind": "linux",

with App Service:

"kind": "functionapp,linux,container"

I am using AzureWebAppContainer@1 task:

- task: AzureWebAppContainer@1
  displayName: Deploy to app service
  inputs:
    azureSubscription: ${{ parameters.azureSubscription }}
    appName: my-web-app0name
    imageName:  myacr01.azurecr.io/myregistryname:tag01
    configurationSettings: -linuxFxVersion DOCKER|myacr01.azurecr.io/myregistryname:tag01"
    appSettings: ${{ parameters.appSettings }}
    resourceGroupName: my-resource-group

When the task is executed by Azure DevOps yaml pipeline in the logs there is info that:

Trying to update App Service Configuration settings. Data: {"appCommandLine":null,"windowsFxVersion":"DOCKER|myacr01.azurecr.io/myregistryname:tag01"}

I do not understand why the windowsFxVersion is used instead of linuxFxVersion . On resource level in Azure Portal I can also see that I have windowsFxVersion set instead of linuxFxVersion.

Worth to mention that when you are clicking thought the wizard on Azure Portal with default Function App it is set as linuxFxVersion.

Answer 1

This is not a valid value:
-linuxFxVersion DOCKER|myacr01.azurecr.io/myregistryname:tag01"

Please find available values by executing :

az webapp list-runtimes --os linux

Result:

[
  "DOTNETCORE:7.0",
  "DOTNETCORE:6.0",
  "DOTNETCORE:3.1",
  "NODE:16-lts",
  "NODE:14-lts",
  "PYTHON:3.9",
  "PYTHON:3.8",
  "PYTHON:3.7",
  "PHP:8.0",
  "PHP:7.4",
  "RUBY:2.7",
  "JAVA:17-java17",
  "JAVA:11-java11",
  "JAVA:8-jre8",
  "JBOSSEAP:7-java11",
  "JBOSSEAP:7-java8",
  "TOMCAT:10.0-java17",
  "TOMCAT:10.0-java11",
  "TOMCAT:10.0-jre8",
  "TOMCAT:9.0-java17",
  "TOMCAT:9.0-java11",
  "TOMCAT:9.0-jre8",
  "TOMCAT:8.5-java11",
  "TOMCAT:8.5-jre8"
]

I'm using in my current project:

linuxFxVersion: 'DO.NET|6.0'
.netFrameworkVersion: 'v6.0'
kind: 'functionapp,linux'

Bicep for creating the app:

resource hostingPlan 'Microsoft.Web/serverfarms@2020-10-01' = {
  name: hostingPlanName
  location: location
  kind: 'linux'
  sku: {
    name: hostingPlanNameSkuName
  }
  properties: {
    reserved: true
  }
}

resource myApp 'Microsoft.Web/sites@2020-06-01' = {
  name: myAppName
  location: location
  kind: 'functionapp,linux'
  identity: {
    type: 'SystemAssigned'
  }
  properties: {
    httpsOnly: true
    serverFarmId: hostingPlan.id
    clientAffinityEnabled: true
    siteConfig: {
      alwaysOn: true
      netFrameworkVersion: 'v6.0'
      linuxFxVersion: 'DOTNET|6.0'
      ftpsState: 'Disabled'
      cors: {
        allowedOrigins: [
          '*'
        ]
      }
    }
  }
}