* rename check-scripts target to lint
* install yamllint through pip on travis
* add yamllint config, do not fail on too long lines
* fix yaml linting errors
* remove circular dependency
* 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
* add todo for docker wait
* add makefile target to scan containers with trivy
* pin version of trivy in travis file
* add trivy cache to persistent storage of travis (commented since not part of ci for the moment)
* reorg travis file + remove goss as it is not used
* add a fixed version for the base image
* add file with tags to gitignore
* introduce tag-all target
* remove after_failure step
* add ignore file for trivy
* store the tag for the builder as well
* remove tag_file after completing scans
* replace manual build and publish commands with generated ones
* update kdav builder to resolve CVE-2019-3855
* ignore CVE-2019-3855 which is thrown in kdav build container
* exclude the build-webapp-demo from build-all
* 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
* add hadolint for dockerfile linting
* add hadofile config
* add checks for dockerfiles and shellcheck into makefile
* shellcheck fixes
* add workaround so that .env can be sourced again from version.sh
* hadolint fixes
* print progress of build/run.sh
* fix check for jq in setup.sh
relates to #41 and #26
* improve runtime by moving some variable assignments into the individual tag targets
* add expect script to run setup.sh in travis
* change language in travis
* add secrets for kopano docker account
