azure-deploy-review.yml

name: 'App Deploy [Azure - REVIEW]'

on:
  pull_request:
    types:
      - labeled # uses 'review'
      - synchronize
    paths-ignore:
      - '**/*.md'
      - .docker*
      - .env.example
      - .gitignore
      - .tool-versions
      - .yardopts
      - bin/*
      - docker-compose.*
      - Dockerfile
      - terraform-azure
      - uml/*

# Permissions for OIDC authentication and URL comment step
permissions:
  id-token: write
  contents: write
  packages: write
  pull-requests: write

env:
  ARM_CLIENT_ID: ${{ secrets.AZURE_CLIENT_ID }}
  ARM_SUBSCRIPTION_ID: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
  ARM_TENANT_ID: ${{ secrets.AZURE_TENANT_ID }}
  DOCKER_IMAGE: ghcr.io/dfe-digital/help-for-early-years-providers
  PR_NUMBER: pr-${{ github.event.number }}

jobs:
  build-and-deploy:
    if: contains(github.event.pull_request.labels.*.name, 'review')
    runs-on: ubuntu-latest
    environment: development

    steps:
      # Checkout the repository to the GitHub Actions runner
      - name: Checkout Code
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}

      # Create and boot Docker image builder
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        with:
          version: v0.9.1

      # Login to the container registry
      - name: Login to Github Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Build and push image
      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          target: app
          context: .
          push: true
          build-args: |
            BUILDKIT_INLINE_CACHE=1
            SHA=${{ github.event.pull_request.head.sha }}
          cache-from: |
            ${{ env.DOCKER_IMAGE }}:${{ github.event.pull_request.head.sha }}
            ${{ env.DOCKER_IMAGE }}:${{ env.PR_NUMBER }}
            ${{ env.DOCKER_IMAGE }}:latest
          tags: |
            ${{ env.DOCKER_IMAGE }}:${{ github.event.pull_request.head.sha }}
            ${{ env.DOCKER_IMAGE }}:${{ env.PR_NUMBER }}

      # Login to Azure using OIDC
      - name: Login to Azure CLI
        uses: azure/login@v2
        with:
          client-id: ${{ secrets.AZURE_CLIENT_ID }}
          tenant-id: ${{ secrets.AZURE_TENANT_ID }}
          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}

      # Deploy Web Application
      - name: Deploy to Azure App Services
        uses: azure/CLI@v2
        with:
          azcliversion: 2.50.0
          inlineScript: |
            az postgres flexible-server db create --resource-group ${{ secrets.AZURE_RESOURCE_GROUP }} \
              --server-name ${{ vars.RESOURCE_NAME_PREFIX }}-psqlfs \
              --database-name ${{ env.PR_NUMBER }} \
              --output none
            az webapp config appsettings set --resource-group ${{ secrets.AZURE_RESOURCE_GROUP }} \
              --name ${{ vars.REVIEWAPP_NAME }} \
              --settings DATABASE_URL="postgresql://${{ secrets.PSQLFS_USERNAME }}:${{ secrets.PSQLFS_PASSWORD }}@${{ vars.RESOURCE_NAME_PREFIX }}-psqlfs.postgres.database.azure.com/${{ env.PR_NUMBER }}?sslmode=require" \
              --output none
            az webapp deployment slot create --resource-group ${{ secrets.AZURE_RESOURCE_GROUP }} \
              --name ${{ vars.REVIEWAPP_NAME }} \
              --slot ${{ env.PR_NUMBER }} \
              --configuration-source ${{ vars.REVIEWAPP_NAME }} \
              --deployment-container-image-name ${{ env.DOCKER_IMAGE }}:${{ env.PR_NUMBER }} \
              --output none
            az webapp vnet-integration add --resource-group ${{ secrets.AZURE_RESOURCE_GROUP }} \
              --name ${{ vars.REVIEWAPP_NAME }} \
              --slot ${{ env.PR_NUMBER }} \
              --subnet ${{ secrets.AZURE_REVIEW_APP_SUBNET }} \
              --vnet ${{ secrets.AZURE_VNET }}
            az webapp config appsettings set --resource-group ${{ secrets.AZURE_RESOURCE_GROUP }} \
              --name ${{ vars.REVIEWAPP_NAME }} \
              --slot ${{ env.PR_NUMBER }} \
              --slot-settings DOMAIN="${{ vars.REVIEWAPP_NAME }}-${{ env.PR_NUMBER }}.azurewebsites.net" \
              --output none

      # Add URL to Pull Request
      - name: Comment URL to PR
        uses: mshick/add-pr-comment@v2
        with:
          message: https://${{ vars.REVIEWAPP_NAME }}-${{ env.PR_NUMBER }}.azurewebsites.net
          repo-token: ${{ secrets.GITHUB_TOKEN }}