Add scheduled deploy workflow

.forgejo/workflows/scheduled-deploy.yaml

@@ -0,0 +1,55 @@
+name: Scheduled Deploy DNS Configuration
+
+on:
+  schedule:
+    - cron: "0 1 * * *"
+
+jobs:
+  scheduled-deploy:
+    runs-on: self-hosted
+    env:
+      DEBUG: 1
+      DEBUG_LOG: /tmp/generate-configs.debug.log
+      INPUT_FILE: domains.txt
+      IPSET_CONF: /tmp/91-ipset-bbrkn.conf
+      RESOLVE_CONF: /tmp/92-resolve-bbrkn.conf
+      DNS_SERVER: 8.8.8.8
+      API_URL: http://10.100.1.2:3000/domains?domain=
+      TARGET_DIR: /opt/appdata/pihole/etc/dnsmasq.d
+      DOCKER_CONTAINER: pihole
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Validate domains file
+        run: |
+          if [ ! -f domains.txt ]; then
+            echo "Error: domains.txt not found"
+            exit 1
+          fi
+          grep -v '^#' domains.txt | grep -v '^$' | while read domain; do
+            if ! echo "$domain" | grep -qE '^[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)+$'; then
+              echo "Error: Invalid domain format: $domain"
+              exit 1
+            fi
+          done
+
+      - name: Prepare Makefile
+        run: |
+          chmod +x scripts/generate-configs.sh
+          chmod +x scripts/deploy-to-gateway.sh
+
+      - name: Run workflow (clean → all)
+        run: |
+          make clean
+          make all
+
+      - name: Upload configs as artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: dnsmasq-configs-scheduled
+          path: |
+            ${{ env.IPSET_CONF }}
+            ${{ env.RESOLVE_CONF }}
+            ${{ env.DEBUG_LOG }}