diff --git a/src/cartservice/Dockerfile b/src/cartservice/Dockerfile
index b0578d6..0180d29 100644
--- a/src/cartservice/Dockerfile
+++ b/src/cartservice/Dockerfile
@@ -5,6 +5,5 @@ RUN dotnet restore
 RUN dotnet build
 RUN dotnet publish
 WORKDIR /app/bin/Debug/netcoreapp2.0
-ENV PORT 7070
-EXPOSE 7070
+RUN apt update && apt install net-tools telnet
 ENTRYPOINT ["dotnet", "cartservice.dll", "start"]