Workflow: adjusted workflow to build from docker

Author: DK10WS

.github/workflows/build-release.yaml

@@ -18,20 +18,6 @@ jobs:
       - name: Set Gradle Java Home
         run: sed -i '$d' android/gradle.properties
 
-      - name: Set Up Java
-        uses: actions/setup-java@v3
-        with:
-          distribution: "oracle"
-          java-version: "17"
-          cache: gradle
-
-      - name: Set Up Flutter
-        uses: subosito/flutter-action@v2
-        with:
-          flutter-version: "3.27.2"
-          channel: "stable"
-          cache: true
-
       - name: Decode Keystore
         run: |
           echo "${{ secrets.KEYSTORE_BASE64 }}" | base64 --decode > upload-keystore.jks
@@ -43,15 +29,15 @@ jobs:
           echo "keyPassword=${{ secrets.KEY_PASSWORD }}" >> android/key.properties
           echo "keyAlias=${{ secrets.KEY_ALIAS }}" >> android/key.properties
           echo "storeFile=upload-keystore.jks" >> android/key.properties
-          cat android/key.properties
-
-      - name: Install Dependencies
-        run: flutter pub get
 
-      - name: Build APK
-        run: flutter build apk --release
+      - name: Build Flutter app using Docker
+        run: |
+          docker build -t slcmapk .
+          
+          docker run --rm \
+            -v ${{ github.workspace }}/build/app/outputs/flutter-apk:/build/app/outputs/flutter-apk \
+            slcmapk
 
-      - name: Upload APK
         uses: actions/upload-artifact@v4
         with:
           name: release-apk