github actions: create workflow to build APK in pull requests

.github/workflows/pull-request.yml

@@ -0,0 +1,45 @@
+name: Testing - build and release app
+
+on:
+  pull_request:
+
+jobs:
+  apk:
+    name: Build APK
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - uses: actions/cache@v2
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+
+      - name: set up JDK 1.17
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.17
+
+      - name: Setup Android SDK
+        uses: android-actions/setup-android@v2
+
+      - name: set up Ruby for fastlane
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: '2.7'
+
+      - name: Create debug keystore
+        run: |
+          echo "${{ secrets.CI_KEYSTORE }}" > debug.keystore.asc
+          gpg -d --passphrase "${{ secrets.CI_KEYSTORE_DECRYPT }}" --batch debug.keystore.asc > /home/runner/.android/debug.keystore
+
+      - name: Install bundle
+        run: bundle install
+
+      - name: Build apk with fastlane
+        run: bundle exec fastlane testing

fastlane/Fastfile

@@ -17,7 +17,7 @@ sh("bundle install")
 
 default_platform(:android)
 
-desc "Create and deploy testing release"
+desc "Create testing release"
 lane :testing do
     gradle(task: "clean assembleCi")
 end