GitHub Action Workflow to rebase a branch

rebase-test.yml‎

name: Rebase and Test ARM32

on:
  schedule:
    - cron: '0 5 * * *'  # Daily at 5am UTC
  workflow_dispatch:      # Manual trigger

jobs:
  rebase-test:
    runs-on: self-hosted
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          ref: arm32-multicore

      - name: Configure git
        run: |
          git config user.name "CI Bot"
          git config user.email "ci@example.com"

      - name: Fetch upstream trunk
        run: |
          git remote add upstream https://github.com/ocaml/ocaml.git || true
          git fetch upstream trunk

      - name: Rebase onto trunk
        id: rebase
        run: |
          if git rebase upstream/trunk; then
            echo "rebase_failed=false" >> $GITHUB_OUTPUT
          else
            echo "rebase_failed=true" >> $GITHUB_OUTPUT
            git rebase --abort
          fi

      - name: Build
        if: steps.rebase.outputs.rebase_failed != 'true'
        run: |
          ./configure
          make -j4 world.opt

      - name: Test
        if: steps.rebase.outputs.rebase_failed != 'true'
        run: |
          TIMEOUT=900 make tests

      - name: Push rebased branch
        if: steps.rebase.outputs.rebase_failed != 'true' && github.event_name == 'schedule'
        run: |
          git push --force origin arm32-multicore

      - name: Report rebase failure
        if: steps.rebase.outputs.rebase_failed == 'true'
        run: |
          echo "::error::Rebase failed - manual intervention required"
          exit 1