是否可以在同一个 ASP.NET 运行时容器中安装不同的 ASP.NET Core 框架？

Question

我有以下Dockerfile

FROM mcr.microsoft.com/dotnet/aspnet:6.0-focal

COPY ./appsettings.json /icon/Server-Files/

WORKDIR /icon

COPY ./* /icon/Server-Files/
CMD [ "dotnet", "Server-Files/Server.dll" ]

我不必构建项目，因为我只编译了.dll文件。

映像已构建并且能够运行。 但是，我有一个客户端试图在服务器中执行一些任务，并且我不断收到以下错误：

| The specified framework can be found at:
icon42test        | It was not possible to find any compatible framework version
icon42test        | The framework 'Microsoft.AspNetCore.App', version '5.0.0' (x64) was not found.
icon42test        |   - The following frameworks were found:
icon42test        |       6.0.6 at [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
icon42test        | 
icon42test        | You can resolve the problem by installing the specified framework and/or SDK.

有没有办法将5.0.0框架安装到容器中？ 我无法理解 Docker Hub 上可用的不同dotnet映像之间的区别，例如aspnet 、 runtime-deps 、 runtime等。

因为我没有源代码，只有编译的.dll文件，所以我无法理解我在aspnet运行时容器中可能需要哪些其他框架。

Answer 1

我可能已经找到了解决方案：

事实证明，大多数dotnet信息都存储在 SDK 各自容器内的/usr/share/dotnet目录中

Dockerfile 语法的COPY可用于使用以下命令将相关文件从容器映像复制到我当前的容器：

FROM mcr.microsoft.com/dotnet/aspnet:6.0-focal

## Add the relevant SDKs to this current runtime base image

COPY --from=mcr.microsoft.com/dotnet/sdk:2.1 /usr/share/dotnet /usr/share/dotnet/
COPY --from=mcr.microsoft.com/dotnet/sdk:5.0 /usr/share/dotnet /usr/share/dotnet/

# List out the available runtimes / SDKs
CMD ["dotnet", "--list-runtimes", "dotnet", "--list-sdks"]

结果输出如下：

Microsoft.AspNetCore.All 2.1.30 [/usr/share/dotnet/shared/Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.30 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.17 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.6 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.30 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.17 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.6 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

现在您在容器中拥有了必要的运行时/SDK。