get connected to temporal

ext/central-controller-docker/Dockerfile.run_base

@@ -11,4 +11,5 @@ RUN apt -y install \
     binutils \
     linux-tools-gke \
     perf-tools-unstable \
-    google-perftools
+    google-perftools \
+    netcat

ext/central-controller-docker/main.sh

@@ -100,6 +100,13 @@ else
     done
 fi
 
+echo "Waiting for temporal"
+while ! nc -z ${ZT_TEMPORAL_HOST} ${ZTC_TEMPORAL_PORT}; do
+    echo "waiting...";
+    sleep 1;
+done
+echo "Temporal is up"
+
 export GLIBCXX_FORCE_NEW=1
 export GLIBCPP_FORCE_NEW=1
 export LD_PRELOAD="/usr/lib/x86_64-linux-gnu/libjemalloc.so.2"