diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 00000000..1bdc5ceb
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,23 @@
+name: build
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Setup Java 8
+      uses: actions/setup-java@v1.3.0
+      with:
+        java-version: 1.8
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Submodule Init
+      run: git submodule sync --recursive && git submodule update --init --force --recursive
+    - name: Build
+      run: bash ./gradlew assembleRelease
+    - name: Artifact
+      uses: actions/upload-artifact@v1.0.0
+      with:
+        name: unsigned-apk
+        path: app/build/outputs/apk