Add Gitea Actions deploy workflow

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -0,0 +1,29 @@
+name: Deploy
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+env:
+  COMPOSE_PROJECT: outline-sync
+  COMPOSE_FILE: docker-compose.yml
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Deploy with docker compose
+        run: |
+          echo "=== Deploying commit ${{ gitea.sha }} to ${{ gitea.ref_name }} ==="
+          docker compose -f "$COMPOSE_FILE" -p "$COMPOSE_PROJECT" up --build -d --remove-orphans
+
+      - name: Prune dangling images
+        run: docker image prune -f
+
+      - name: Show running containers
+        run: docker compose -f "$COMPOSE_FILE" -p "$COMPOSE_PROJECT" ps