Use netcat to check if mailinabox webservice is available

setup/management.sh

@@ -41,8 +41,5 @@ EOF
 chmod +x /etc/cron.daily/mailinabox-statuschecks
 
 
-# Start it. Remove the api key file first so that start.sh
-# can wait for it to be created to know that the management
-# server is ready.
-rm -f /var/lib/mailinabox/api.key
+# Start it.
 restart_service mailinabox

setup/start.sh

@@ -72,7 +72,8 @@ if [ ! -z "$IS_DOCKER" ]; then
 fi
 
 # Ping the management daemon to write the DNS and nginx configuration files.
-while [ ! -f /var/lib/mailinabox/api.key ]; do
+until nc -z -w 4 localhost 10222
+do
 	echo Waiting for the Mail-in-a-Box management daemon to start...
 	sleep 2
 done