azure-preview-env-destroy.yml

name: Azure - Destroy Preview Env

# **What it does**: Destroys resources associated with a PRs Azure preview environment
# **Why we have it**: Closed PRs don't need apps
# **Who does it impact**: All contributors.

on:
  pull_request_target:
    types:
      - closed
      - locked
  workflow_dispatch:
    inputs:
      PR_NUMBER:
        description: 'PR Number'
        type: string
        required: true

permissions:
  contents: read

# This allows one deploy workflow to interrupt another
concurrency:
  group: 'preview-env @ ${{ github.head_ref || github.run_id }} for ${{ github.event.number || github.event.inputs.PR_NUMBER }}'
  cancel-in-progress: true

jobs:
  destory-azure-preview-env:
    name: Destroy
    runs-on: ubuntu-latest
    timeout-minutes: 5
    env:
      PR_NUMBER: ${{ github.event.number || github.event.inputs.PR_NUMBER }}

    steps:
      - name: 'Az CLI login'
        uses: azure/login@1f63701bf3e6892515f1b7ce2d2bf1708b46beaf
        with:
          creds: ${{ secrets.NONPROD_AZURE_CREDENTIALS }}

      - name: Check out repo
        uses: actions/checkout@1e204e9a9253d643386038d443f96446fa156a97

      - name: Get preview app info
        env:
          APP_NAME_SEED: ${{ secrets.PREVIEW_ENV_NAME_SEED }}
        run: .github/actions-scripts/get-preview-app-info.sh

      # Succeed despite any non-zero exit code (e.g. if there is no deployment to cancel)
      - name: 'Cancel any in progress deployments'
        run: |
          az deployment group cancel --name ${{ env.DEPLOYMENT_NAME }} -g ${{ secrets.PREVIEW_ENV_RESOURCE_GROUP }} || true

      # Delete web app (which will also delete the App Service plan)
      # This will succeed even if the app doesn't exist / has already been deleted
      - name: 'Delete App Service App (which will also delete the App Service plan)'
        run: |
          az container delete -n ${{ env.APP_NAME }} -g ${{ secrets.PREVIEW_ENV_RESOURCE_GROUP }} -y

      # Untag all images under this PR's container registry repo - the container registry will automatically remove untagged images.
      # This will fail if the IMAGE_REPO doesn't exist, but we don't care
      - name: 'Untag all docker images for this PR'
        run: |
          az acr repository delete -n ${{ secrets.NONPROD_REGISTRY_SERVER }} --repository ${{ env.IMAGE_REPO }} -y || true

      # Remove all GitHub deployments from this environment and remove the environment
      - uses: strumwolf/delete-deployment-environment@45c821e46baa405e25410700fe2e9643929706a0
        with:
          # The token provided by the workflow does not have the permissions to delete created environments
          token: ${{ secrets.DOCUBOT_REPO_PAT }}
          environment: preview-env-${{ env.PR_NUMBER }}