I tried deploying a simple web app with Go as the backend and React as the frontend. When I deploy my React app to Azure Web App using GitHub, I get the same error.

it is saying that the container didn't respond to pings on port 8080.

To resolve the above, I used below Startup Command in the Configuration section of my Azure Web App.

pm2 serve /home/site/wwwroot/build --no-daemon --spa

Make Sure to Enable Access-Control-Credentials for Frontend URL in CORS section of Azure Web App.

GitHub Workflow File:

name: Build and deploy Node.js app to Azure Web App - kareactwebapp
on:
  push:
    branches:
      - main
  workflow_dispatch:
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Set up Node.js version
        uses: actions/setup-node@v3
        with:
          node-version: '18.x'
      - name: npm install, build
        run: |
          npm install
          npm run build --if-present
      - name: Zip artifact for deployment
        run: zip release.zip ./* -r
      - name: Upload artifact for deployment job
        uses: actions/upload-artifact@v4
        with:
          name: node-app
          path: release.zip
  deploy:
    runs-on: ubuntu-latest
    needs: build
    environment:
      name: 'Production'
      url: ${{ steps.deploy-to-webapp.outputs.webapp-url }}
    permissions:
      id-token: write #This is required for requesting the JWT
    steps:
      - name: Download artifact from build job
        uses: actions/download-artifact@v4
        with:
          name: node-app
      - name: Unzip artifact for deployment
        run: unzip release.zip
      - name: Login to Azure
        uses: azure/login@v2
        with:
          client-id: ${{ secrets.AZUREAPPSERVICE_CLIENTID_2E3A719386B34C329432070E0CBA706E }}
          tenant-id: ${{ secrets.AZUREAPPSERVICE_TENANTID_4AB5B4332AA14B8DA4D29611B84DCC23 }}
          subscription-id: ${{ secrets.AZUREAPPSERVICE_SUBSCRIPTIONID_3B6FC06574EB489CA89ADD342F031641 }}
      - name: 'Deploy to Azure Web App'
        id: deploy-to-webapp
        uses: azure/webapps-deploy@v3
        with:
          app-name: 'kareactwebapp'
          slot-name: 'Production'
          package: .          

Azure Output: