perf: DockerFile 수정

[wlgns12370]

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[gemini-code-assist]

Summary of Changes

Hello @wlgns12370, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

이 PR은 Java 애플리케이션의 Dockerfile을 최적화하여 JVM 옵션 관리를 개선하고 ENTRYPOINT 실행 방식을 유연하게 변경합니다. 이를 통해 컨테이너화된 애플리케이션의 성능 설정 및 배포 유연성이 향상될 것으로 예상됩니다.

Highlights

• Java 옵션 관리 개선: Java 가상 머신(JVM) 옵션(-XX:+UseG1GC, -XX:MaxGCPauseMillis=100, -Xms2g, -Xmx2g)을 JAVA_OPTS 환경 변수로 분리하여 관리 효율성을 높였습니다.
• ENTRYPOINT 명령 유연성 증대: ENTRYPOINT 명령이 sh -c를 사용하여 실행되도록 변경되어, 환경 변수를 활용한 동적인 Java 실행 옵션 적용이 가능해졌습니다.
• 보안 관련 옵션 제거: 기존 ENTRYPOINT에 포함되어 있던 -Djava.security.egd=file:/dev/./urandom 옵션이 제거되었습니다.

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[gemini-code-assist]

Code Review

이 PR은 Dockerfile을 수정하여 JVM 옵션 설정을 개선합니다. ENTRYPOINT를 수정하고 JAVA_OPTS 환경 변수를 도입하여 컨테이너 실행 시 JVM 옵션을 유연하게 변경할 수 있도록 한 점은 좋은 방향입니다. 전반적으로 긍정적인 변경이지만, 코드 일관성을 높이기 위해 타임존 설정도 JAVA_OPTS로 옮기는 것을 제안합니다.

[gemini-code-assist]

JAVA_OPTS 환경 변수를 도입하여 JVM 옵션을 외부에서 주입할 수 있도록 변경한 점은 좋은 개선입니다. 다만, 일관성을 위해 -Duser.timezone=GMT+9 옵션도 JAVA_OPTS에 포함하는 것이 더 좋을 것 같습니다. 이렇게 하면 모든 JVM 관련 설정을 한 곳에서 관리하고 오버라이드할 수 있어 유지보수성이 향상됩니다.

ENV JAVA_OPTS="-Duser.timezone=GMT+9 -XX:+UseG1GC -XX:MaxGCPauseMillis=100 -Xms2g -Xmx2g"
ENTRYPOINT ["sh", "-c", "exec java $JAVA_OPTS -jar /app.war"]