scale-azure-container-app.yml

name: "Scale Container App"

on:
  workflow_dispatch:
    inputs:
      min_replicas:
        description: "Container App Min Replicas"
        required: true
        default: "0"
  schedule:
    # ncrontab linux >> https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#schedule
    # Runs at 0 minutes past the hour, every 3 hours
    - cron: "0 */3 * * *"

env:
  max_replicas: 1
  scale_down_min_replicas: 0
  name: my-budget-app
  resource_group: rg-my-budget-app

jobs:
  scale:
    if: github.event_name == 'workflow_dispatch'
    runs-on: ubuntu-latest
    steps:
      - name: Login Azure
        uses: azure/login@v1
        with:
          creds: ${{ secrets.AZURE_CREDENTIAL_AZURE_CONTAINER_APP }}

      # Azure CLI 2.52.0 containerapp extension is in preview
      # Required to install manually
      - name: Deploy image to Azure Container App without Revision Suffix
        uses: azure/CLI@v1
        with:
          azcliversion: 2.52.0
          inlineScript: |
            az extension add --name containerapp
            az containerapp update \
              --name ${{ env.name }} \
              --resource-group ${{ env.resource_group }} \
              --max-replicas ${{ env.max_replicas }} \
              --min-replicas ${{ inputs.min_replicas }} \
              > ${{ env.name }}.log.txt

  scale-scheduled:
    if: github.event_name == 'schedule'
    runs-on: ubuntu-latest
    steps:
      - name: Login Azure
        uses: azure/login@v1
        with:
          creds: ${{ secrets.AZURE_CREDENTIAL_AZURE_CONTAINER_APP }}

      # Azure CLI 2.52.0 containerapp extension is in preview
      # Required to install manually
      - name: Deploy image to Azure Container App without Revision Suffix
        uses: azure/CLI@v1
        with:
          azcliversion: 2.52.0
          inlineScript: |
            az extension add --name containerapp
            az containerapp update \
              --name ${{ env.name }} \
              --resource-group ${{ env.resource_group }} \
              --max-replicas ${{ env.max_replicas }} \
              --min-replicas ${{ env.scale_down_min_replicas }} \
              > ${{ env.name }}.log.txt