debian Dockerfile删除程序包管理器缓存

FROM debian  
RUN apt-get update && \  
    apt-get -y install --no-install-recommends \  
    openjdk-11-jdk && \  
    rm -rf /var/lib/apt/lists/*  
COPY target/my-app-1.0-SNAPSHOT.jar /app  
CMD [“java”, “-jar”, “/app/my-app-1.0-SNAPSHOT.jar”]