Rename DockerFile to Dockerfile

Author: pmadusud

src/Application/src/RazorPagesTestSample/DockerFile renamed to src/Application/src/RazorPagesTestSample/Dockerfile

@@ -15,4 +15,4 @@ WORKDIR /app
 COPY --from=build-env /app/out .
 # Default ASP.NET port changed with .NET 8.0
 ENV ASPNETCORE_HTTP_PORTS=80
-ENTRYPOINT ["dotnet", "RazorPagesTestSample.dll"]
+ENTRYPOINT ["dotnet", "RazorPagesTestSample.dll"]