auto-update-runner.yaml

# Automatically rebuild the runner dockerfile if base image changes
name: Auto update images
on:
  #schedule:
  #  # Random-ish time in the morning
  #  - cron: "42 3 * * *"
  workflow_dispatch:

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
      - uses: actions/checkout@v2
      - name: Check if we have to even do all this
        id: check
        uses: twiddler/is-my-docker-parent-image-out-of-date@v1
        with:
          parent-image: rust:alpine
          my-image: ghcr.io/theconner/rustbot-runner:latest
      - name: Needs update?
        run: |
          echo "Needs to update ${{ steps.check.outputs.out-of-date }}"
    outputs:
      needsupdate: ${{ steps.check.outputs.out-of-date }}
  do-update:
    needs: [check]
    secrets: inherit
    uses: ./.github/workflows/build-release-container.yaml
    with:
      image_name: rustbot-runner
      image_file: runner.Dockerfile
    if: needs.check.outputs.needsupdate == 'true'