Run all containers read-only (#314)

* switch containers in compose file to read-only
related to https://github.com/zokradonh/kopano-docker/issues/310
* make scheduler container read-only
* make meet container read-only
* fix konnect for read-only
* make core mostly read-only
* add custom location for ldap.cfg to default config
* sort config option for readability
* update makefile pull workaround
* make kdav read-only
* remove locale generation code from core startup
* fix commander tests
* fix store language tests
* add test for a dutch mailbox
* make it possible to run webapp read-only
* add locale hint to the compose file
* finish read-only mode for z-push

scheduler/start.sh

@@ -2,7 +2,7 @@
 
 set -eo pipefail
 
-cronfile=/etc/crontab
+cronfile=/tmp/crontab
 
 # purge existing entries from crontab
 true > "$cronfile"
@@ -15,7 +15,7 @@ done
 
 for cronvar in ${!CRONDELAYED_*}; do
 	cronvalue=${!cronvar}
-	echo "Adding $cronvalue to crontab"
+	echo "Adding $cronvalue to crontab (delayed)"
 	echo "$cronvalue" >> "$cronfile"
 done
 
@@ -26,7 +26,7 @@ dockerize \
 echo "creating public store"
 docker exec kopano_server kopano-storeadm -h default: -P || true
 
-# run sheduled cron jobs once
+echo "Running sheduled cron jobs once"
 for cronvar in ${!CRON_*}; do
 	cronvalue=${!cronvar}
 	croncommand=$(echo "$cronvalue" | cut -d ' ' -f 6-)
@@ -34,5 +34,5 @@ for cronvar in ${!CRON_*}; do
 	$croncommand
 done
 
-supercronic -test /etc/crontab
-exec supercronic /etc/crontab
+supercronic -test $cronfile
+exec supercronic $cronfile