Notify maintainers every two weeks to build & deploy container

.github/workflows/notify-maintainers.yaml

@@ -0,0 +1,37 @@
+name: Notify Maintainers
+on:
+  schedule:
+    - cron: 0 12 1,15 * *
+
+  workflow_dispatch:
+
+jobs:
+  comment_on_issue:
+    name: Comment on issue
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+    steps:
+      - name: Open issue
+        uses: actions-cool/issues-helper@v2
+        with:
+          actions: "open-issue"
+          token: ${{ secrets.GITHUB_TOKEN }}
+          issue-number: 12
+
+      - name: Create comment
+        uses: actions-cool/issues-helper@v2
+        with:
+          actions: "create-comment"
+          token: ${{ secrets.GITHUB_TOKEN }}
+          issue-number: 12
+          body: |
+            Please build the container and deploy it to the Sylabs Cloud. It has been two weeks since the last reminder.
+
+
+            Steps to deploy:
+            ```bash
+            singularity remote login
+            singularity sign container.sif
+            singularity push container.sif library://apascha1/MIPTools/MIPTools:{tag}
+            ```