run grept each week, submit changes as pull request.

.github/workflows/weekly-cronjob.yml

@@ -0,0 +1,32 @@
+name: Weekly Cronjob
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 0 * * 0'
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  grept-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 #v4.1.1
+      - id: grept-apply
+        name: grept-apply
+        run: |
+          docker run --rm -v $(pwd):/src -w /src mcr.microsoft.com/azterraform:latest make grept-apply
+          git config user.name "github-actions[bot]"
+          git config user.email "grept-bot[bot]@users.noreply.github.com"
+          git add -A
+          git commit -am "Update generated by \`grept\`"
+          git diff-tree --no-commit-id --name-only -r HEAD
+          echo "CHANGED_FILES_COUNT=$(git diff-tree --no-commit-id --name-only -r HEAD | wc -l)" >> $GITHUB_OUTPUT
+      - name: Create Pull Request
+        if: steps.grept-apply.outputs.CHANGED_FILES_COUNT!='0'
+        uses: peter-evans/create-pull-request@153407881ec5c347639a548ade7d8ad1d6740e38 #v5.0.2
+        with:
+          title: 'Update generated by `grept`'
+          body: 'Update generated by `grept`. Due to the limitation of [github action](https://github.com/peter-evans/create-pull-request/blob/main/docs/concepts-guidelines.md#triggering-further-workflow-runs), please close this PR manually and then reopen it to trigger a `pull_request` event.'

.gitignore

@@ -38,4 +38,4 @@ terraform.rc
 avmmakefile
 README-generated.md
 avm.tflint.hcl
-avm.tflint_example.hcl
+avm.tflint_example.hcl