Ubuntu 20官方仓库没有bazel这个编译工具，可以通过如下方式安装：
设置bazel的镜像源sudo apt install curl gnupg curl -fsSL https://bazel.build/bazel-release.pub.gpg | gpg --dearmor > bazel.gpg sudo mv bazel.gpg /etc/apt/trusted.gpg.d/ echo "deb [arch=amd64] https://storage.googleapis.com/bazel-apt stable jdk1.8" | sudo tee /etc/apt/sources.list.d/bazel.list安装bazel
sudo apt update && sudo apt search bazel # 选择合适的版本进行安装 sudo apt install bazel-4.2.2 # 创建符号链接 mkdir ~/bin ln -s /usr/bin/bazel-4.2.2 ~/bin/bazel官方资源：
https://www.bazel.build/
