👷 Add workflows system

Author: Alessevan

.github/workflows/build.yml

@@ -0,0 +1,25 @@
+name: Gradle Build
+on:
+  push:
+    branches:
+      - master
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2.3.4
+      - name: Set up JDK
+        uses: actions/setup-java@v1.4.3
+        with:
+          java-version: 1.11
+          java-package: jdk
+      - name: Make gradlew executable
+        run: chmod +x ./gradlew
+      - name: Build with Gradle
+        run: ./gradlew clean build
+      - name: Upload artifact
+        uses: actions/upload-artifact@v2
+        with:
+          name: InventoryAPI
+          path: build/libs/**