Add APK CI
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..e80e2d2
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,29 @@
+name: Build APK
+
+on:
+  push:
+    branches: ["master"]
+  workflow_dispatch:
+
+concurrency:
+  group: "build"
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Setup Java JDK
+        uses: actions/setup-java@v3.9.0
+        with:
+          java-version: 11
+          distribution: adopt
+      - name: Gradle Build Action
+        run: ./gradlew :app:assembleDebug
+      - name: Upload artifact
+        uses: actions/upload-artifact@v2
+        with:
+          name: app-debug.apk
+          path: app/build/outputs/apk/debug/app-debug.apk