* update supercronic to the latest release
* update tagging for base
* fix version tag for core
* put versions for all containers into labels instead
* define vcf_ref once
* remove cache-from as caches will be invalidated early on because of passing the git ref early on
* do not rebuild when publishing
* do not rebuild when publishing
* reduce layers required for env assignment
* pull newer base images for kdav, scheduler and ssl if available
* alsp publish tag for ldap containers
* fix publishing of ssl container
* adapt webapp container for new php base image
* clean out webapp dockerfile
* complete switch of webapp to php-fpm
* update config in web container
* update readme
* remove logging config from docker-compose.yml
* add php container to tagging and publishing
* move .env creation into install
rerun check-scripts after creation as well
* update docker-compose
* add simple test if containers start up
* redirect output of compose stop