ci: add action for portainer deployment

.gitea/workflows/deploy.yml

@@ -0,0 +1,44 @@
+name: Build and Deploy to Portainer
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-deploy:
+    # Falls Ihr Runner ein anderes Label hat (z.B. 'docker', 'linux'), 
+    # ändern Sie 'ubuntu-latest' entsprechend ab.
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+
+      - name: Setup Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Gitea Container Registry
+        uses: docker/login-action@v3
+        with:
+          # Hier ist die lokale IP-Adresse der Registry hinterlegt.
+          # Alternativ git.purepixel.ch (je nach Gitea/Docker Setup)
+          registry: 192.168.1.183:3100
+          username: ${{ secrets.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: 192.168.1.183:3100/adminpepe/lageplan:latest
+          # Caching für schnellere Builds (optional)
+          cache-from: type=registry,ref=192.168.1.183:3100/adminpepe/lageplan:buildcache
+          cache-to: type=registry,ref=192.168.1.183:3100/adminpepe/lageplan:buildcache,mode=max
+
+      - name: Trigger Portainer Webhook
+        run: |
+          echo "Triggering Portainer to pull the latest image and update the stack..."
+          curl -S -X POST "${{ secrets.PORTAINER_WEBHOOK }}"