fix: jar 여러 개일 때 발생하는 문제 수정

Author: kaswhy

Dockerfile

@@ -6,9 +6,11 @@ RUN ls -l
 RUN chmod +x gradlew
 RUN ./gradlew build -x test
 
+RUN cp $(ls /app/gdgoc/build/libs/*.jar | head -n 1) /app/gdgoc/build/libs/app.jar
+
 FROM openjdk:17-jdk-slim
 WORKDIR /app
 
-COPY --from=build /app/gdgoc/build/libs/*.jar app.jar
+COPY --from=build /app/gdgoc/build/libs/app.jar app.jar
 
 ENTRYPOINT ["java", "-jar", "app.jar"]