[FORGEJO] workflow cascading-pr to setup-forgejo (#93)

Reviewed-on: https://code.forgejo.org/forgejo/runner/pulls/93
Reviewed-by: dachary <dachary@noreply.code.forgejo.org>
Co-authored-by: Earl Warren <contact@earl-warren.org>
Co-committed-by: Earl Warren <contact@earl-warren.org>

.forgejo/cascading-pr-setup-forgejo

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -ex
+
+setup_forgejo=$1
+setup_forgejo_pr=$2
+runner_pr=$3
+
+url=$(jq --raw-output .head.repo.html_url < $runner_pr)
+test "$url" != null
+branch=$(jq --raw-output .head.ref < $runner_pr)
+test "$branch" != null
+cd $setup_forgejo
+./utils/upgrade-runner.sh $url @$branch

.forgejo/workflows/cascade-setup-forgejo.yml

@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: MIT
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - closed
+jobs:
+  cascade:
+    runs-on: docker
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/cascading-pr@v1
+        with:
+          origin-url: ${{ env.GITHUB_SERVER_URL }}
+          origin-repo: forgejo/runner
+          origin-token: ${{ secrets.CASCADING_PR_ORIGIN }}
+          origin-pr: ${{ github.event.pull_request.number }}
+          destination-url: ${{ env.GITHUB_SERVER_URL }}
+          destination-repo: actions/setup-forgejo
+          destination-branch: main
+          destination-token: ${{ secrets.CASCADING_PR_DESTINATION }}
+          update: .forgejo/cascading-pr-setup-forgejo