将 Asp.net 核心 Docker 目标从 Windows 更改为 Linux

Question

I have created a new ASP.net application by Visual Studio 2019. When I was creating the project, I ticked the Docker Support checkbox and selected Windows for my docker. After a while, I decided to change my docker from Windows to Linux as I have some other software on Linux container and every time I need to switch. I did some research and I found out if I change the server URL inside the DockerFile, I can change it to Linux. By doing it I encounter this error: Your Docker server host is configured for 'Linux', however the project targets 'Windows'

Then I opened the Cs proj file and change the windows to Linux and now I see: Unable to copy file obj\\debug\\netcoreapp2.1\\xxxx.dll to bin\\debug\\netcoreapp2.1\\xxxx.dll. Access to the path bin\\debug\\netcoreapp2.1\\xxxx.dll is denied.

I reverted the change but I still see the same error.

Answer 1

在记事本++之类的文本编辑器中编辑您的 .csproj 文件，您应该会看到 DockerDefaultTargetOS 标记，它应该会读取 Windows 将其更改为 Linux

Answer 2

• update your dockerfile, replace the base instruction by this line "FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim AS base"
• do the same with build instruction: FROM mcr.microsoft.com/dotnet/core/sdk:3.1-buster AS build
• update your csproj tag DockerDefaultTargetOS to point to linux