added a dockerfile

.github/workflows/backend.yml

@@ -14,41 +14,37 @@ env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}-backend
 
-
 jobs:
   build:
     runs-on: ubuntu-latest
-    defaults:
-      run:
-        working-directory: Packit-backend
-
     steps:
-      - name: Clone the project
-        uses: actions/checkout@v4
-      - uses: actions/setup-java@v4
+      - uses: actions/checkout@v3
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
         with:
-          distribution: 'temurin'
           java-version: '17'
-      - name: Maven build
-        run: mvn clean package -q
-      - name: Upload artifact
-        uses: actions/upload-artifact@v4
+          distribution: 'adopt'
+      - name: Build with Gradle
+        uses: gradle/gradle-build-action@v2
         with:
-          name: Packit-backend
-          path: Packit-backend/target/*.jar
+          gradle-version: 7.6
+          arguments: clean build
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          push: true
+          tags: user/app:latest
 
   docker-build:
-    needs:
-      - build
+    needs: build
     runs-on: ubuntu-latest
     defaults:
       run:
         working-directory: Packit-backend
-
     permissions:
       contents: read
       packages: write
-
     steps:
       - name: Clone the project
         uses: actions/checkout@v4
@@ -57,31 +53,25 @@ jobs:
         with:
           name: Packit-backend
           path: Packit-backend/target
-
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v2
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
-
       - id: lowercase_name
         uses: ASzc/change-string-case-action@v6
         with:
-          string: ${{ env.IMAGE_NAME}}
-
+          string: ${{ env.IMAGE_NAME }}
       - name: Extract metadata (tags, labels) for Docker
         id: meta
         uses: docker/metadata-action@v5
         with:
           images: ${{ env.REGISTRY }}/${{ steps.lowercase_name.outputs.lowercase }}
-
       - name: Build and push image
         uses: docker/build-push-action@v5
         with:
           context: ./Packit-backend
-          push: "${{ github.ref == 'refs/heads/main' && 'true' || 'false' }}"
+          push: ${{ github.ref == 'refs/heads/main' && 'true' || 'false' }}
           tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-
-
+          labels: ${{ steps.meta.outputs.labels }}