ARG AWS_LAMBDA_VERSION=local FROM aws-lambda-dotnet:$AWS_LAMBDA_VERSION AS base FROM mcr.microsoft.com/dotnet/sdk:6.0-bullseye-slim as build COPY . /Sample WORKDIR /Sample RUN dotnet build "Sample.csproj" -o /app/build FROM build AS publish RUN dotnet publish "Sample.csproj" -c Release -o /app/publish FROM base AS final COPY --from=publish /app/publish ${LAMBDA_TASK_ROOT} # ref. https://docs.aws.amazon.com/lambda/latest/dg/csharp-handler.html#csharp-handler-signatures CMD [ "Sample::Sample.Function::FunctionHandler" ]