我在“gitlab-ci”文件中使用“mysql 5.7”并使用“apt-get -y install mysql-client”来安装sql客户端，但它总是给我错误。
ERROR : "Package mysql-client is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source".
该脚本在 gitlab 管道上运行，这就是我收到此错误的原因。当我将代码推送到我的分支时，会运行一个管道，它首先在失败的地方安装所有依赖项。