add slack alert & cron

.github/workflows/slack-alert.yml

@@ -0,0 +1,22 @@
+name: slack-alert
+
+on:
+  workflow_run:
+    workflows: [tests]
+    types: [completed]
+
+jobs:
+  on-failure:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'failure' }}
+    steps:
+      - name: Send Slack Alert
+        id: slack
+        uses: slackapi/slack-github-action@v1.26.0
+        with:
+          payload: |
+            Github Actions ${{ github.event.workflow_run.conclusion }}
+            Repo: ${{github.event.workflow_run.repository.name }}
+            Workflow URL: ${{ github.event.workflow_run.html_url }}
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}

.github/workflows/tests.yml

@@ -5,6 +5,9 @@ on:
     branches: [master, stable-*]
   pull_request:
     branches: [master, stable-*]
+  schedule:
+    # Every Sunday, rerun
+    - cron: "0 12 * * 0"
 
 jobs:
   tests:
@@ -64,7 +67,7 @@ jobs:
         os: [ubuntu-latest]
         java-distribution: [adopt]
         java-version: [17]
-        dockcross-tag: ["20220906-e88a3ce", "20230116-670f7f7"]
+        dockcross-tag: ["20230116-670f7f7", "20240529-0dade71", "latest"]
 
     steps:
       - uses: actions/checkout@v2.1.1