Update flutter.yml

Author: krissphi

.github/workflows/flutter.yml

@@ -1,8 +1,3 @@
-# This workflow uses actions that are not certified by GitHub.
-# They are provided by a third-party and are governed by
-# separate terms of service, privacy policy, and support
-# documentation.
-
 name: Flutter
 
 on:
@@ -16,19 +11,37 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      # 1. Checkout source code
       - uses: actions/checkout@v4
-      
-      - uses: dart-lang/setup-dart@9a04e6d73cca37bd455e0608d7e5092f881fd603
-      
+
+      # 2. Setup Flutter SDK
+      - uses: subosito/flutter-action@v2
+        with:
+          flutter-version: 'stable' # Bisa diganti ke '3.19.0' misalnya
+
+      # 3. Cache Flutter dependencies
+      - name: Cache Flutter dependencies
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.pub-cache
+            .dart_tool
+          key: ${{ runner.os }}-flutter-${{ hashFiles('**/pubspec.yaml') }}
+          restore-keys: |
+            ${{ runner.os }}-flutter-
+
+      # 4. Install dependencies
       - name: Install dependencies
         run: flutter pub get
-        
+
+      # 5. Run analysis
       - name: Analyze project source
         run: flutter analyze
-        
+
+      # 6. Run unit tests
       - name: Run tests
         run: flutter test
-        
-      - name: Check Flutter
+
+      # 7. Show Flutter environment info (useful for debugging)
+      - name: Flutter doctor
         run: flutter doctor -v
-