Docker-Win .NET Core 3.1 Unable to load DLL 'Magick.Native-Q8-x64.dll' or one of its dependencies

Prerequisites

• I have written a descriptive issue title
• I have verified that I am using the latest version of Magick.NET
• I have searched open and closed issues to ensure it has not already been reported

Description

I found many issues regarding this but the solutions that helped others in .NET Core 2.2 Im using Windows Container with image of “mcr.microsoft.com/dotnet/core/aspnet:3.1”.

I also did the step descripbed here to set the NativeLibPath:

string nativeDir = System.IO.Path.Combine(dir, "runtimes", "win-x64", "native");
ImageMagick.MagickNET.SetNativeLibraryDirectory(nativeDir);

Im still getting the error “Unable to load DLL ‘Magick.Native-Q8-x64.dll’” and cant find any error in my dockerfile:

FROM mcr.microsoft.com/dotnet/core/aspnet:3.1 AS base 
WORKDIR /app
EXPOSE 80
EXPOSE 443


FROM mcr.microsoft.com/dotnet/core/sdk:3.1 AS build 
WORKDIR /src
COPY ["Web/MyWebApp/MyWebApp.csproj", "Web/MyWebApp/"]
# Copy last successfull build of ngapp
COPY ["Tools/MyApp/MyApp.csproj", "Tools/MyApp/"]

RUN dotnet restore "Web/MyWebApp/MyWebApp.csproj"
RUN dotnet restore "Tools/MyApp/MyApp.csproj"
WORKDIR /src/
COPY . .
WORKDIR /src/Tools/MyApp
RUN dotnet build   "MyApp.csproj" -c Release -o /app/build-m
WORKDIR "/src/Web/MyWebApp"
RUN dotnet build "MyWebApp.csproj" -c Release -o /app/build


FROM build as consoleAppPublish
WORKDIR /src/Tools/MyApp 
RUN dotnet publish "MyApp.csproj" -c Release -o /console-app/publish 

FROM build as apppublish
WORKDIR /src/Web/MyWebApp 
RUN dotnet publish "MyWebApp.csproj" -c Release -o /app/publish

WORKDIR /app/publish/ClientApp/dist
COPY --from=build /src/Web/ngapp .

FROM base as final

WORKDIR /app/
COPY --from=apppublish /app/publish .
COPY --from=consoleAppPublish /console-app/publish /app/consoleapp 
COPY --from=build /src/Web/MyWebApp/start-apps.bat .
ENTRYPOINT ["start-apps.bat"]

Steps to Reproduce

Deploy an App referencing to “Magick.NET-Q8-x64”

System Configuration

• Magick.NET version:Magick.NET-Q8-x64 7.22.2.1
• Environment (Operating system, version and so on): Docker, Windows Container, mcr.microsoft.com/dotnet/core/aspnet:3.1
• Additional information:

[IcoDeveloper]

And some more info: the mcr.microsoft.com/dotnet/aspnet image is based off nanoserver, which does not include gdiplus. So far, it doesn’t look possible to add gdiplus to nano server just by copying in a couple of dlls.

What does work is using an image based on server core, with the obvious downside of increasing image size to about 5GB.

While there is no official MS image for 3.1 based on server core, there is one for 5.0.

I’ve successfully verified that using FROM mcr.microsoft.com/dotnet/aspnet:5.0-windowsservercore-ltsc2019 AS base no longer throws an exception initializing Magick.Net

If you want a differnt version of the runtime (like 3.1) you’ll have to create your own image - you can base it on the MS dockerfile for 5.0

[nfMalde]

Thanks! Basing on servercore Magick.NET and other image processing libs work.