Added Android build singing info

.github/workflows/build_apk.yml

@@ -13,28 +13,24 @@ jobs:
         working-directory: ./mobile
     steps:
       - uses: actions/checkout@v2
-      
+
-      # Sign
-      - uses: r0adkll/sign-android-release@v1
-        name: Sign app APK
-        # ID used to access action output
-        id: sign_app
-        with:
-          releaseDirectory: mobile/build/app/outputs/apk/release
-          signingKeyBase64: ${{ secrets.SIGNING_KEY }}
-          alias: ${{ secrets.ALIAS }}
-          keyStorePassword: ${{ secrets.KEY_STORE_PASSWORD }}
-          keyPassword: ${{ secrets.KEY_PASSWORD }}
-        env:
-          # override default build-tools version (29.0.3) -- optional
-          BUILD_TOOLS_VERSION: "30.0.2"
-      
       # Build
       - uses: subosito/flutter-action@v2
         with:
           channel: "stable"
           cache: true
           cache-key: flutter2.10 # optional, change this to force refresh cache
+        env:
+          KEY_JKS: ${{ secrets.SIGNING_KEY }}
+          SIGNING_KEY_ALIAS: ${{ secrets.ALIAS }}
+          SIGNING_KEY_PASSWORD: ${{ secrets.KEY_PASSWORD }}
+          SIGNING_STORE_PASSWORD: ${{ secrets.KEY_STORE_PASSWORD }}
+      - name: Decode Keystore
+        run: |
+          echo "${{secrets.SIGNING_KEY}}" > release.keystore.asc
+          gpg -d --passphrase   "${{secrets.KEY_STORE_PASSWORD}}" - - batch release.keystore.asc > android/key.jks
+      - name: Create key.properties
+        run: touch mobile/android/key.properties echo "storePassword=<storePassword> keyPassword=<keyPassword> keyAlias=<keyAlias> storeFile=../key.jks"  > mobile/android/key.properties
       - run: flutter --version
       - run: flutter pub get
       - run: flutter build apk