Recently, I upgraded a few of my projects to .NET 5.0. Most of project shipped as docker containers, the upgrade requires making some changed to docker files. Converting from .NET Core 2.2/3.1 to .NET 5 is streight forward. Here are some notes from the process:
Dockerfile files are cool when they are working. In order to make them work without additional effort is better to keep similar folder structure between the projects.
I use the following structure for my projects:
/src /tests /Dockerfile
.NET application docker file example
# pick image including .net sdk for compilation FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build-env # change directiry WORKDIR /app # copy COPY src/ ./ # if special config is used COPY nuget.config ./ # restore RUN dotnet restore "./Api.csproj" --configfile "./nuget.config" # publish RUN dotnet publish "./Api.csproj" -c Release -o out # Build runtime image FROM mcr.microsoft.com/dotnet/aspnet:5.0 COPY --from=build-env /app/out . # expose port EXPOSE 6032 # set .net app to expose a port ENV ASPNETCORE_URLS http://*:6032 # run ENTRYPOINT ["dotnet", "Api.dll"]
If console application is deployed mcr.microsoft.com/dotnet/runtime:5.0 should be used as a build image.