fix JSONArgsRecommended

Author: FreeAndNil

Dockerfile

@@ -33,4 +33,5 @@ ENV PATH="$PATH:$DOTNET_ROOT:$DOTNET_ROOT/tools"
 ADD . /logging-log4net
 RUN dotnet restore /logging-log4net/src/log4net.sln
 RUN dotnet build -c Release /logging-log4net/src/log4net.sln
-CMD [/bin/bash]
+SHELL ["/bin/bash"]
+ENTRYPOINT echo "you can start the tests with: dotnet test /logging-log4net/src/log4net.sln"