Ubuntu – Azure App Service – GitHub Action – WEBSITE_RUN_FROM_PACKAGE Not Running

As .net 8.0 is still in Preview not all the Features are available for Deploying your Asp.net core API. Thus while deploying the Asp.net core API or any API in Azure Web app its necessary to use Deployment mode as self contained while deploying your Web API to Web app like below:-

Reference – SO Thread answer By Pravallika and comment by YMC

I created one Asp.net core 8.0 Web API and while deployment selected Self contained as Deployment Type like below:-

And After clicking on Publish the Web API was deployed successfully like below:-

I have also connected one APIM instance for managing the API while deployment like below, you can skip this step:-

UPDATED Solution:-

By default az webapp deployment source config-zip does not contain a parameter to add –self-contained as Deployment mode, Thus you need to add your --self-contained zip artifact in your az webapp deployment command in your github workflow like below:-

My updated github workflow steps with the cli zip method:-

• Make sure the artifact path you are using is correct, Cross-check it in your Download Artifact step in the deploy stage.
• My downloaded artifact path where I added .zip suffix :-
  /home/runner/work/WebApplication16/WebApplication16.zip

Also, I have added the Azure CLI service principal credentials as a github secret, Refer below:-

Created service principal with contributor role at subscription level and added the output as a github secret:-

az ad sp create-for-rbac --name "sp-name" --role contributor --scopes /subscriptions/xxxxxxxsub-id --sdk-auth

Output:-

Copied this output in the secrets:-

My github action workflow script with zip command:-

#https://stackoverflow.com/questions/68327652/error-with-github-action-deploy-to-azure-web-app
name: API-zip

on: 
  push:
    # only trigger on branches, not on tags
    branches: '**'

jobs:
  build:

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@master

    - name: Setup .NET
      uses: actions/setup-dotnet@v3
      with:
        dotnet-version: 8.0.x
        dotnet-quality: 'preview'
        
    - name: Build with dotnet
      run: dotnet build --configuration Release 

    - name: dotnet publish
      run: dotnet publish -c Release --self-contained -r linux-x64 -o ${{ github.workspace }}/.net-app
        # Adjust the runtime identifier (-r) to match your target platform.

    - name: Upload artifact for deployment job
      uses: actions/upload-artifact@v2
      with:
          name: .net-app
          path: ${{ github.workspace }}/.net-app

  publish:
    runs-on: ubuntu-latest
    needs: build
    
    steps:
    - name: Download artifact from build job
      uses: actions/download-artifact@v2
      with:
          name: .net-app

    - name: Configure Azure credentials
      uses: azure/login@v1
      with:
        creds: ${{ secrets.AZURE_CREDENTIALS }}

    - name: Deploy to Azure
      uses: azure/CLI@v1
      with:
        azcliversion: 2.52.0
        inlineScript: |
          zip -r /home/runner/work/WebApplication16/WebApplication16.zip .
          ls -R
          az webapp deployment source config-zip --resource-group valleyrg54 --name siliconwebapp098 --src /home/runner/work/WebApplication16/WebApplication16.zip

Output:-

API got deployed in Azure web app and is running successfully with /WeatherForecast:-

https://.azurewebsites.net/WeatherForecast

An alternative method is to use azure/webapps-deploy@v2 task like below:-

My github action workflow:-

I have created a default workflow by connecting my github repository with the Azure Web app via Deployment Center and then edited the workflow code like below:-

My repository with .net 8.0 core API:-

Edited the workflow file with --self-contained and -r linux-x64 flag like below:-

Workflow code:-

name: Build and deploy ASP.NET Core app to Azure Web App - valleywebapp21

on:
  push:
    branches:
      - main
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2

      - name: Set up .NET Core
        uses: actions/setup-dotnet@v1
        with:
          dotnet-version: '8.x'
          include-prerelease: true

      - name: Build with dotnet
        run: dotnet build --configuration Release

      - name: dotnet publish
        run: dotnet publish -c Release --self-contained -r linux-x64 -o ${{ github.workspace }}/.net-app
        # Adjust the runtime identifier (-r) to match your target platform.

      - name: Upload artifact for deployment job
        uses: actions/upload-artifact@v2
        with:
          name: .net-app
          path: ${{ github.workspace }}/.net-app

  deploy:
    runs-on: ubuntu-latest
    needs: build
    environment:
      name: 'Production'
      url: ${{ steps.deploy-to-webapp.outputs.webapp-url }}

    steps:
      - name: Download artifact from build job
        uses: actions/download-artifact@v2
        with:
          name: .net-app

      - name: Deploy to Azure Web App
        id: deploy-to-webapp
        uses: azure/webapps-deploy@v2
        with:
          app-name: 'valleywebapp21'
          slot-name: 'Production'
          publish-profile: ${{ secrets.AZUREAPPSERVICE_PUBLISHPROFILE_3AFD052BFF7A47D398D058E0DB22F706 }}
          package: /home/runner/work/WebApplication16/WebApplication16

Cross check where your artifacts are downloaded in your build job in deploy stage and add that path in the package at Deploy to Azure Web App step as my script above:-

Web API deployed successfully:-

I am able to access WeatherForecast API like below after deployment:-