Refactor CI to support multiple docker images

1 job for refactor_ci in 1 minute and 4 seconds (queued for 2 seconds)
Name Stage Failure
failed
build:project-usage-to-influx Build
 ---> Running in 517e4b336cff
Removing intermediate container 517e4b336cff
---> eda398bb50a0
Successfully built eda398bb50a0
Successfully tagged registry.gitlab.ics.muni.cz:443/cloud/cloud-tools-project-usage-to-influx:refactor-ci
$ docker push "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG"
The push refers to repository [registry.gitlab.ics.muni.cz:443/cloud/cloud-tools]
An image does not exist locally with the tag: registry.gitlab.ics.muni.cz:443/cloud/cloud-tools
ERROR: Job failed: exit code 1