Add iproute to dockerfile

Dockerfile

@@ -10,6 +10,8 @@ COPY . .
 RUN make build
 
 FROM ubuntu:22.04
+RUN apt update
+RUN apt install -y iproute2
 COPY --from=builder gnmi-target/artifacts/gnmi-target /usr/bin/gnmi-target
 EXPOSE 7030
 ENTRYPOINT ["/usr/bin/gnmi-target"]