feat: add Dockerfile & CI script for building application

.gitea/workflows/integration.yaml

@@ -0,0 +1,30 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-24.04
+
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+
+      - name: Docker Login
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ secrets.DOCKER_REGISTRY }}
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Build and push image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile
+          platforms: linux/amd64
+          push: true
+          tags: ${{ secrets.DOCKER_REGISTRY }}/${{ secrets.DOCKER_IMAGE }}:${{ gitea.sha }}

Dockerfile

@@ -0,0 +1,10 @@
+FROM gradle:8-jdk17 AS builder
+WORKDIR /app
+COPY . .
+RUN gradle bootJar --no-daemon
+
+FROM amazoncorretto:17
+WORKDIR /app
+EXPOSE 8080
+COPY --from=builder /app/build/libs/*.jar app.jar
+ENTRYPOINT ["java", "-jar", "app.jar"]