ASP.NET Core docker build error
It is docker-compose.dcproj file where you can set up the OS you want to target:
<DockerTargetOS>Linux</DockerTargetOS>To switch docker daemon to the same OS you can use Docker tray icon or Docker Settings window (accessible from the same menu):
Well basically the answer of Celestin Bochis and Pavel Agarkov are great. However since .net core 2.2 at least, the os of docker is stored in the .csproj file.
<Project Sdk="Microsoft.NET.Sdk.Web"> <PropertyGroup> <TargetFramework>netcoreapp2.2</TargetFramework> <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS> ... </PropertyGroup> ...</Project>And also don't forget to modify your docker file. The images should be the correct one. For .net core 2.2 That is :
Linux:Microsoft/dotnet:2.2-aspnetcore-runtime AS basemicrosoft/dotnet:2.2-sdk AS buildWindows:microsoft/dotnet:2.2-aspnetcore-runtime-nanoserver-1803microsoft/dotnet:2.2-sdk-nanoserver-1803
Make sure to choose the correct OS when you Enable docker support:
Your docker daemon has to target Linux containers as well.