Healthcheck must to ensure mongo availability on startup

healthcheck.sh

@@ -3,6 +3,7 @@
 containerstart=`stat -c %Z /proc/1`
 curtime=`date +%s`
 if (( curtime-containerstart < 180 )); then
+    while ! mongo --host "${DB_CLUSTER}" --eval "db.runCommand( { connectionStatus: 1 } )"; do echo "Waiting for ${DB_CLUSTER} to be available"; sleep 1; done
     echo "0"
     exit 0
 fi