ccr.ccs.tencentyun.com/mcr.microsoft.com/dotnetcoresdk = mcr.microsoft.com/dotnet/core/sdk => 3.0-buster ; 2.2-stretch
ccr.ccs.tencentyun.com/mcr.microsoft.com/dotnetcoreaspnet = mcr.microsoft.com/dotnet/core/aspnet => 3.0-buster-slim ; 2.2-stretch-slim