dotnet fix

dotnetv3/Dockerfile

@@ -1,13 +1,15 @@
 # syntax=docker/dockerfile:1
 FROM mcr.microsoft.com/dotnet/sdk:6.0
 
-# Copy source code
-COPY . /dotnetv3
-
-# Perform build steps
+# Enable the .NET 5.0 SDK if running 5.0 examples:
 COPY --from=mcr.microsoft.com/dotnet/sdk:5.0 /usr/share/dotnet/sdk /usr/share/dotnet/sdk
 COPY --from=mcr.microsoft.com/dotnet/sdk:5.0 /usr/share/dotnet/shared /usr/share/dotnet/shared
 
+# Copy the dotnetv3 folder and run unit tests from the top level solution.
+# Or navigate to a service folder or a scenario folder,
+# such as dotnetv3/CloudWatch/Scenarios to build and run an interactive scenario with `dotnet run`
+COPY . /dotnetv3
+
 RUN cd /dotnetv3 && dotnet build
 
-CMD ["dotnet", "test", "--filter", "Category=Unit"]
+CMD ["dotnet", "test", "dotnetv3", "--filter", "Category=Unit"]