Overview of a workflow

• Pushing a new commit to a main branch triggers a workflow.
• Use Yarn to build a project and publish to Azure App Service with Azure/functions-action.
• A workflow is defined by a YAML (.yml) file in the .github/workflows/ directory in your repository.
• We use a Node.js project from a code example in Azure Functions content.

All required GitHub secrets

• AZURE_FUNCTIONS_APP_PUBLISH_PROFILE, set to a value of publish profile content that we download from Azure portal.
• AZURE_FUNCTIONS_APP_NAME, set to a name of Azure Functions that you are about to deploy.

Example of a workflow script

# .github/workflows/deploy-node-js-app-to-azure-functions.yml
name: Deploy Node.js app to Azure Functions
on:
  push:
    branches:
      - main # Change to any branch to appropriate your project.
env:
  AZURE_FUNCTIONS_APP_PACKAGE_PATH: '.' # Set this to the path of your function app project, defaults to the repository root.
  NODE_VERSION: 12.x # Set Node.js version to use.
jobs:
  build-and-deploy:
    # Find more virtual environments
    # https://www.dotnetthailand.com/programming-cookbook/github-actions/github-actions-fundamentals#findmorevirtualenvironments
    runs-on: ubuntu-18.04
    # You can use default run to set a default working directory
    # https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-syntax-for-github-actions#jobsjob_iddefaultsrun
    defaults:
      run:
        working-directory: ${{ env.AZURE_FUNCTIONS_APP_PACKAGE_PATH }}
    steps:
      - name: Checkout the latest source code from ${{ github.ref }} commit
        uses: actions/checkout@v2 # https://github.com/actions/checkout
      - name: Install Azure Functions Core Tools
        # Yarn's already installed on a virtual environment https://github.com/actions/virtual-environments/blob/main/images/linux/Ubuntu1804-README.md#package-management
        run: |
          # Install the Microsoft package repository GPG key, to validate package integrity.
          curl https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor > microsoft.gpg
          sudo mv microsoft.gpg /etc/apt/trusted.gpg.d/microsoft.gpg
          # Set up the APT source list before doing an APT update.
          sudo sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/repos/microsoft-ubuntu-$(lsb_release -cs)-prod $(lsb_release -cs) main" > \
            /etc/apt/sources.list.d/dotnetdev.list'
          # Install the Core Tools package.
          sudo apt-get update
          sudo apt-get install azure-functions-core-tools-3
      - name: Use Node.js version ${{ env.NODE_VERSION }}
        uses: actions/setup-node@v2 # https://github.com/actions/setup-node
        with:
          node-version: ${{ env.NODE_VERSION }}
      - name: Build a Node.js project with Yarn
        # Yarn's already installed on a virtual environment https://github.com/actions/virtual-environments/blob/main/images/linux/Ubuntu1804-README.md#package-management
        run: |
          yarn install
          yarn run build:production
      - name: Deploy Node.js app to Azure Functions
        uses: Azure/functions-action@v1 # https://github.com/Azure/functions-action
        with:
          app-name: ${{ secrets.AZURE_FUNCTIONS_APP_NAME }}
          package: ${{ env.AZURE_FUNCTIONS_APP_PACKAGE_PATH }}
          publish-profile: ${{ secrets.AZURE_FUNCTIONS_APP_PUBLISH_PROFILE }}

Output after pushing a new commit to GitHub

Credit & Reference

• https://docs.microsoft.com/en-us/azure/azure-functions/functions-how-to-github-actions?tabs=javascript