Add Docker, Nginx, and Gitea workflow configuration

.gitea/workflows/build.yaml

@@ -0,0 +1,19 @@
+name: Deploy to Production
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    runs-on: self-hosted
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+
+      - name: Build and deploy with Docker Compose
+        run: |
+          # Clean up previous containers if needed
+          docker compose down --remove-orphans || true
+          docker compose up -d --build