feat: use portainer hook instead of pushing image to gitea package repository

.gitea/workflows/deploy.yml

@@ -0,0 +1,28 @@
+name: Deploy
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build Docker image
+        run: docker build .
+
+  deploy:
+    runs-on: ubuntu-latest
+    needs: build
+
+    steps:
+      - name: Trigger Portainer webhook
+        run: curl -X POST "${{ secrets.PORTAINER_WEBHOOK_URL }}"