Use .gitea/ instead of .github/

.gitea/workflows/docker-check.yml

@@ -0,0 +1,19 @@
+name: Docker Build Check
+
+on:
+  push:
+    paths:
+      - 'Dockerfile'
+  pull_request:
+    paths:
+      - 'Dockerfile'
+
+jobs:
+  docker-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Run Docker Build Check
+        run: docker build --check .