Update README.md

Merge pull request #278 from Toutzn/master

enable cron support

Merge pull request #245 from skupjoe/master

Fix #243

Merge pull request #241 from markverg/patch-1

Add TZ to readme

Merge pull request #235 from skupjoe/master

Fix issue #234

Update Dockerfile

Merge pull request #169 from christianuhlmann/check_snmp

Check snmp

temporary fix as check_run not run starting in foreground

Update Dockerfile

Merge pull request #90 from bebehei/icinga-disable-feature

do not work around weird warning messages in feature-disable