actions test

.forgejo/workflows/build.yml

@@ -6,6 +6,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+      - uses: setup-java@v3
+        with:
+          distribution: 'temurin' # See 'Supported distributions' for available options
+          cache: 'gradle'
       - name: build
         run: |
           chmod +x gradlew