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Template for Playwright .Net in a Linux Consumption Plan (Isolated) Azure Functions

A template repo to show you how to set up playwright .net in an azure function.

This requires a few things to work:

  • Linux consumption plan
  • .net 6.0 isolated azure function (.net 7 update coming soon)
  • Deploy via a Service Principal (rather than zip-deploy publish profile) - this is so that the browser's executable permission bit is kept during deployment
  • Github Actions to build the project, and include the browser in the deployment

Installation

  • Create template from this repo
  • Optionally rename project, solution
  • Publish initially to Azure: Visual studio, Publish, Azure, Azure Function App (Linux), create new, next, CI/CD using GitHub Actions workflows
  • Set up Using Azure Service Principal for RBAC as Deployment Credential (naming the secret AZURE_RBAC_CREDENTIALS)
  • Edit the .github/.workflows/.yml:

Add Env variable:

  # changed '/published' to '/publish' on this line
  AZURE_FUNCTIONAPP_PACKAGE_PATH: <NameOfMyApp>/publish
  # download playwright browser to the folder to be deployed, not ~/.cache/ms-playwright
  PLAYWRIGHT_BROWSERS_PATH: <NameOfMyApp>/publish/.playwright/ms-playwright

after dotnet publish, add playwright install:

      # added for playwright. tar the directory as this keeps permission bits when publishing artifacts
    - name: Playwright install
      shell: bash
      run: |
        dotnet tool install --global Microsoft.Playwright.CLI
        playwright install chromium
        tar -cvf publish_directory.tar "${{ env.AZURE_FUNCTIONAPP_PACKAGE_PATH }}"

update Publish Artifacts to:

    - name: Publish Artifacts
      uses: actions/[email protected]
      with:
        name: functionapp
        path: publish_directory.tar

In the deploy section, before Deploy to Azure Function App, add:

    - name: Download artifact from build job
      uses: actions/download-artifact@v2
      with:
        name: functionapp
    - name: Restore artifact with permissions
      shell: bash
      run: |
        mkdir --parents ${{ env.AZURE_FUNCTIONAPP_PACKAGE_PATH }}
        tar xvf publish_directory.tar
    - name: 'Login via Azure CLI'
      uses: azure/login@v1
      with:
        creds: ${{ secrets.AZURE_RBAC_CREDENTIALS }}

To make the Azure/functions-action deploy using a service principal, find publish-profile: ${{ secrets.... and remove it.

Then, at the end, add:

    # added for playwright
    - name: App Settings Update
      uses: azure/appservice-settings@v1
      with:
        app-name: ${{ env.AZURE_FUNCTIONAPP_NAME }}
        mask-inputs: false
        app-settings-json: '[{ "name": "WEBSITE_MOUNT_ENABLED", "value": 1, "slotSetting": false }, { "name": "FUNCTIONS_WORKER_RUNTIME", "value": "dotnet-isolated", "slotSetting": false }, { "name": "PLAYWRIGHT_BROWSERS_PATH", "value": "/home/site/wwwroot/.playwright/ms-playwright", "slotSetting": false }]'
    - uses: geekyeggo/delete-artifact@v2
      with:
          name: functionapp