Needhelp converting an small ASP.Net app into Google Cloud Run function

This is a ASP.Net MVC web app that has an API endpoint we need for parsing data from one file format to another. We want to convert this existing ASP.net web project to Google Cloud Run. We need help on containerizing the web app. Google Cloud Run Tutorial we are trying to duplicate for our ASP.Net MVC application... [login to view URL] Current Error on terminal screen: $ docker build . --tag [login to view URL] Sending build context to Docker daemon 263.5MB Step 1/11 : FROM [login to view URL]:3.1-alpine AS build ---> a080a91e5357 Step 2/11 : WORKDIR /app ---> Using cache ---> c7ae12e184a9 Step 3/11 : COPY *.csproj ./ COPY failed: no source files were specified .gcloudignore file: **/obj/ **/bin/ Dockerfile contents: # Use Microsoft's official build .NET image. # [login to view URL] FROM [login to view URL]:3.1-alpine AS build WORKDIR /app # Install production dependencies. # Copy csproj and restore as distinct layers. COPY *.csproj ./ RUN dotnet restore # Copy local code to the container image. COPY . ./ WORKDIR /app # Build a release artifact. RUN dotnet publish -c Release -o out # Use Microsoft's official runtime .NET image. # [login to view URL] FROM [login to view URL]:3.1-alpine AS runtime WORKDIR /app COPY --from=build /app/out ./ # Run the web service on container startup. ENTRYPOINT ["dotnet","[login to view URL]"]