Docker file #See https://aka.ms/containerfastmode to understand how Visual Studio uses this Dockerfile to build your images for faster debugging. FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS base WORKDIR /app EXPOSE 80 EXPOSE 443 FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build WORKDIR /src COPY ["Examples.AspNetCore.csproj", "."] RUN dotnet restore "./Examples.AspNetCore.csproj" COPY . . WORKDIR "/src/." RUN dotnet build "Examples.AspNetCore.csproj" -c Release -o /app/build FROM build AS publish RUN dotnet publish "Examples.AspNetCore.csproj" -c Release -o /app/publish FROM base AS final WORKDIR /app COPY --from=publish /app/publish . ENTRYPOINT ["dotnet", "Examples.AspNetCore.dll"]

https://github.com/Macross-Software/core/blob/develop/ClassLibraries/Macross.OpenTelemetry.Extensions/README.md .. Yo can also add above package for proper error while connecting to otlp