chore: add muti-platform docker image build for aurora-springboot backend.

[1orz]

• Add multi-platform build for aurora-spring boot backend. The build process is merged into Dockerfile.
• Move the api path for getting blog information from /api to /api/info to adapt to the caddy server.

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• 为 aurora-spring boot 后端添加多平台构建。构建过程合并到dockerfile中进行。
• 将获取博客信息的api路径从 /api 移至 /api/info。以便适应 caddy 服务器。