github action caching

.github/workflows/build.yml

@@ -27,6 +27,14 @@ jobs:
           distribution: 'microsoft'
       - name: make gradle wrapper executable
         run: chmod +x ./gradlew
+      - uses: actions/cache@v4
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
       - name: build
         run: ./gradlew remapJar
       - name: capture build artifacts