测试 e^x=1+x+\frac{1}{2!}x^2+\frac{1}{3!}x^3+... sinx=x+\frac{1}{3!}x^3+\frac{1}{5!}x^5+... FROM openjdk:21-jdk-slim # 设置工作目录 WORKDIR /app # 复制 Spring