pull cadvisor image when son-emu is executed as container
diff --git a/utils/docker/entrypoint.sh b/utils/docker/entrypoint.sh
index 7e72914..1820515 100755
--- a/utils/docker/entrypoint.sh
+++ b/utils/docker/entrypoint.sh
@@ -4,4 +4,9 @@
#cp /containernet/util/docker/entrypoint.sh /tmp/x.sh
#cat /tmp/x.sh | awk 'NR==1{print; print "set -x"} NR!=1' > /conteinernet/util/docker/entrypoint.sh
+# this cannot be done from the Dockerfile since we have the socket not mounted during build
+# this image is needed for the monitoring in son-emu
+echo 'Pulling the "google/cadvisor" image ... please wait'
+docker pull 'google/cadvisor'
+
exec /containernet/util/docker/entrypoint.sh $*