diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..6799890
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,22 @@
+name: Build
+on: [push]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: set up JDK 17
+        uses: actions/setup-java@v2
+        with:
+          java-version: '17'
+          distribution: 'zulu'
+      - name: make gradlew executable
+        run: chmod +x ./gradlew
+      - name: build debug
+        run: ./gradlew app:assembleDebug
+      - name: Upload
+        uses: actions/upload-artifact@v2
+        with:
+          name: generated-apk
+          path: app/build/outputs/apk/debug/app-debug.apk
+          if-no-files-found: error
diff --git a/gradlew b/gradlew
index eb2fd63..2456b62 100755
--- a/gradlew
+++ b/gradlew
@@ -1,5 +1,4 @@
-#!/usr/bin/
-env sh
+#!/usr/bin/env sh
 
 #