update stages of gitlab-ci (?) or add needs

Currently the stages are taking too long to be executed.

Adding needs can ensure priority over the steps in a stage.

But in the current case there is no priority among the stages, which cause a delay, while a lot of steps could be working in parallel.

The current stages are: setup, check, test, deploy

Perhaps if there was a build, stage, we could save repetition. (?)

Also, https://docs.gitlab.com/ee/ci/yaml/#needs