docker配置环境失败

[aqr1961]

W: GPG error: http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ubuntu focal InRelease: At least one invalid signature was encountered. E: The repository 'http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ubuntu focal InRelease' is not signed. W: GPG error: http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ubuntu focal-updates InRelease: At least one invalid signature was encountered. E: The repository 'http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ubuntu focal-updates InRelease' is not signed. W: GPG error: http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ubuntu focal-backports InRelease: At least one invalid signature was encountered. E: The repository 'http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ubuntu focal-backports InRelease' is not signed. W: GPG error: http://security.ubuntu.com/ubuntu focal-security InRelease: At least one invalid signature was encountered. E: The repository 'http://security.ubuntu.com/ubuntu focal-security InRelease' is not signed. The command '/bin/sh -c apt-get clean && apt-get update && apt-get install -y vim libsm6 libxext6 libxrender-dev libgl1-mesa-glx git wget libssl-dev libopencv-dev libspdlog-dev --no-install-recommends && rm -rf /var/lib/apt/lists/*' returned a non-zero code: 100 黄博士您好 我在使用docker配置环境的时候 出现了这样的错误 初步推断是镜像源不可用造成的 请问您有什么解决方案吗 谢谢您