Configure Digitransit CI actions

Author: optionsome

.github/CODEOWNERS

@@ -13,12 +13,12 @@ jobs:
     if: github.repository_owner == 'opentripplanner'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@v6.0.1
+      - uses: actions/stale@v5.0.0
         id: stale
         with:
           stale-issue-message: 'This issue is stale because it has been open 90 days with no activity. Remove stale label or comment or this will be closed in 30 days'
           days-before-stale: 90
           days-before-close: 30
-          operations-per-run: 260
+          operations-per-run: 180
           exempt-issue-labels: 'Roadmap'
           ascending: true

.github/pull_request_template.md

@@ -0,0 +1,20 @@
+name: Process dev-2.x push or pr
+on:
+  push:
+    branches:
+      - dev-2.x
+  pull_request:
+    branches:
+      - dev-2.x
+jobs:
+  docker-push:
+    if: github.ref == 'refs/heads/dev-2.x'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Build docker image from dev-2.x and push it
+        run: ./.github/workflows/scripts/build_and_push_dev.sh
+        env:
+          DOCKER_USER: ${{ secrets.DOCKER_USER }}
+          DOCKER_AUTH: ${{ secrets.DOCKER_AUTH }}