build: add android CD

.gitea/workflows/2-cd.yml

@@ -42,3 +42,43 @@ jobs:
           rsync -avz -e "ssh -i private_key -o StrictHostKeyChecking=no" dist/ $DEPLOY_USER@$DEPLOY_HOST:$TARGET_PATH/
 
           rm private_key
+  build-android:
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: latest
+      - uses: oven-sh/setup-bun@v2
+      - name: Install dependencies
+        run: bun i
+      - name: Setup Java
+        uses: actions/setup-java@v4
+        with:
+          distribution: "zulu"
+          java-version: "17"
+      - name: Setup Android SDK
+        uses: android-actions/setup-android@v3
+      - name: Install NDK
+        run: sdkmanager "ndk;27.0.11902837"
+      - name: Install Rust stable
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: aarch64-linux-android,armv7-linux-androideabi,i686-linux-android,x86_64-linux-android
+      - name: Setup Android signing
+        run: |
+          cd src-tauri/gen/android
+          echo "keyAlias=${{ secrets.ANDROID_KEY_ALIAS }}" > keystore.properties
+          echo "password=${{ secrets.ANDROID_KEY_PASSWORD }}" >> keystore.properties
+          base64 -d <<< "${{ secrets.ANDROID_KEY_BASE64 }}" > $RUNNER_TEMP/keystore.jks
+          echo "storeFile=$RUNNER_TEMP/keystore.jks" >> keystore.properties
+          echo "Keystore properties created."
+          cd ../../.. # Go back to root
+      - name: Build app bundle
+        run: bun tauri android build -v --apk
+        env:
+          NDK_HOME: ${{ env.ANDROID_HOME }}/ndk/27.0.11902837
+      - name: Upload apk
+        uses: actions/upload-artifact@v3
+        with:
+          name: trafficcue.apk
+          path: ./src-tauri/gen/android/app/build/outputs/apk/universal/release/app-universal-release.apk