fix: updated CI config for Github Actions

.github/workflows/ci.yml

@@ -7,26 +7,30 @@ on:
 
 jobs:
   check-format:
-      name: Check format using flutter format
-      runs-on: ubuntu-latest
-      container: cirrusci/flutter:stable
+    name: Check format using dart format.
+    runs-on: ubuntu-latest
 
-      steps:
-        - name: Checkout code
-          uses: actions/checkout@v3
-        - name: Check format
-          run: flutter format -n --set-exit-if-changed .
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Flutter Action
+        uses: subosito/flutter-action@v2
+      - name: Check format
+        run: dart format . --set-exit-if-changed
 
   lint:
     name: Lint
     runs-on: ubuntu-latest
-    container: cirrusci/flutter:stable
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v2
+      - name: Flutter Action
+        uses: subosito/flutter-action@v2
+      - name: Install Package Dependencies
+        run: flutter packages get
       - name: Get dependencies for example
         run: flutter pub get
         working-directory: example
       - name: Lint using flutter analyze
-        run: flutter analyze
+        run: flutter analyze .