Create backend ci.yml (#31)

.github/workflows/backend ci.yml

@@ -0,0 +1,46 @@
+name: backend ci
+
+on:
+  workflow_dispatch:
+  pull_request:
+    branches: [ "develop" ]
+
+permissions:
+  contents: read
+
+jobs:
+  build-backend:
+    runs-on: ubuntu-22.04
+    defaults:
+      run:
+        working-directory: backend
+
+    steps:
+      - name: Set up Repository
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: "17"
+          distribution: "corretto"
+
+      - name: Give permission for Gradle
+        run: chmod +x gradlew
+
+      - name: Cache Gradle
+        id: cache-gradle
+        uses: actions/cache@v4
+        with:
+          path: ~/.gradle/caches
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+      - name: Build with Gradle
+        run: ./gradlew bootJar
+
+      - name: Upload jar file artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: BackendApplicationJar
+          path: backend/build/libs/*.jar