Add signing to nightly build workflow

.github/workflows/android.yml

@@ -7,9 +7,7 @@ on:
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
     steps:
       - uses: actions/checkout@v3
       - name: set up JDK 11
@@ -18,14 +16,32 @@ jobs:
           java-version: '11'
           distribution: 'temurin'
           cache: gradle
-
+      - name: Setup Gradle Cache
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-${{ hashFiles('**/*.gradle*') }}-${{ hashFiles('**/gradle/wrapper/gradle-wrapper.properties') }}-${{ hashFiles('**/buildSrc/**/*.kt') }}
       - name: Grant execute permission for gradlew
         run: chmod +x gradlew
-    - name: Build APK
+      - name: Decode Keystore
-      run: ./gradlew assembleDefaultNightly
+        env:
+          ENCODED_STRING: ${{ secrets.KEYSTORE }}
+        run: |
+          TMP_KEYSTORE_FILE_PATH="${RUNNER_TEMP}"/keystore
+          mkdir "${TMP_KEYSTORE_FILE_PATH}"
+          echo $ENCODED_STRING | base64 -di > "${TMP_KEYSTORE_FILE_PATH}"/keystore.jks
+      - name: Build and sign APK
+        run: ./gradlew
+          -PKEYSTORE_FILE="${RUNNER_TEMP}/keystore/keystore.jks"
+          -PKEYSTORE_PASSWORD=${{ secrets.KEYSTORE_PASSWORD }}
+          -PSIGNING_KEY_ALIAS=${{ secrets.SIGNING_KEY_ALIAS }}
+          -PSIGNING_KEY_PASSWORD=${{ secrets.SIGNING_KEY_PASSWORD }}
+          assembleDefaultNightly
       - name: Upload APK
         uses: actions/upload-artifact@v1
         with:
-        name: flavorName.apk
+          name: de.mm20.launcher2.nightly.apk
           path: app/app/build/outputs/apk/default/nightly/app-default-nightly.apk