Initial commit: backend code

Dockerfile

@@ -0,0 +1,19 @@
+FROM eclipse-temurin:17-jdk-alpine AS builder
+
+WORKDIR /app
+
+COPY pom.xml .
+COPY src ./src
+
+RUN apk add --no-cache maven && \
+    mvn clean package -DskipTests
+
+FROM eclipse-temurin:17-jre-alpine
+
+WORKDIR /app
+
+COPY --from=builder /app/target/*.jar app.jar
+
+EXPOSE 8080
+
+ENTRYPOINT ["java", "-jar", "app.jar"]