Deployment to Azure Linux App services from Azure DevOps has no effect

Question

I have an Angular 8 + asp.net core 3.1 application generated by Visual Studio 2019.

I tried to deploy the application as is without modification on the Azure Linux App Service by using a VS 2019 Publish and the application gets deployed with no issue and I can access the application from web browsers on the <app-name>.azurewebsites.net url

When deploying the application from an Azure release pipeline with the Azure App Service deploy Task, the deployment occurs with no errors but when requesting <app-name>.azurewebsites.net I get the default site as in the following screenshot

It seems that the deployment has no effect from Azure DevOps. What am I doing wrong?

Details

Build pipeline

trigger:
- master

pool:
  vmImage: 'windows-2019'

variables:
  solution: '**/*.sln'
  buildPlatform: 'Any CPU'
  buildConfiguration: 'Release'

steps:
- task: Npm@1
  displayName: 'npm install'
  inputs:
    command: 'install'
    workingDir: 'MyApp/ClientApp'
- task: NuGetToolInstaller@1

- task: NuGetCommand@2
  displayName: 'nuget restore'
  inputs:
    restoreSolution: '$(solution)'
- task: Npm@1
  displayName: 'ng build'
  inputs:
    command: 'custom'
    workingDir: 'MyApp/ClientApp'
    customCommand: 'run build'

- task: DotNetCoreCLI@2
  displayName: 'dotnet build release'
  inputs:
    command: 'build'
    arguments: '-c $(buildConfiguration)'

- task: DotNetCoreCLI@2
  displayName: 'dotnet publish'
  inputs:
    command: 'publish'
    publishWebProjects: true
    arguments: '-r linux-x64 -c release --output $(build.ArtifactStagingDirectory)'
    
- task: PublishBuildArtifacts@1
  displayName: 'Publish Artifact Website'
  inputs:
    PathtoPublish: '$(Build.ArtifactStagingDirectory)'
    ArtifactName: 'MyAppDropDir'
    publishLocation: 'Container'

- task: PublishBuildArtifacts@1
  displayName: 'Publish Artifact ARM Template'
  inputs:
    PathtoPublish: '$(Build.SourcesDirectory)/MyApp.AppService'
    ArtifactName: 'ARMTemplate'
    publishLocation: 'Container'

Release Pipeline

Sajeetharan Sajeetharan · Accepted Answer · 2019-12-26T14:15:43

One thing you could do is goto the Kudu console of the deployed web application and see if the actual code has been deployed.

For eg: https://.scm.azurewebsites.net/ where name is the name for your web app.

Also as I see you need to set up a startup command on the release pipeline as dotnet aspnet-core-dotnet-core.dll

Another thing you could try is by setting a new Devops Project and then replace the source code with your repository. You can navigate to Azure portal -> Devops Project, you can pick .Net and then Core3 as the template just to see what went wrong

Deployment to Azure Linux App services from Azure DevOps has no effect

Details

Build pipeline

Release Pipeline

2 Answers