Tried build workflow

.gitea/workflows/pull_request.yaml

@@ -4,6 +4,26 @@ on:
   pull_request:
 
 jobs:
+  build-android:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Flutter (wget)
+        run: |
+          wget --show-progress --progress=bar:force:noscroll:giga https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_3.38.2-stable.tar.xz
+          tar xf flutter_linux_3.38.2-stable.tar.xz
+          git config --global --add safe.directory "$(pwd)/flutter"
+          echo "$(pwd)/flutter/bin" >> $GITEA_PATH
+
+      - name: Get dependencies
+        run: flutter pub get
+
+      - name: Build APK
+        run: flutter build apk --release
+
   lint:
     runs-on: ubuntu-latest