Here are some benefits of moving to GitHub
Actions:
* The Docker image `fertapric/elixir-ci:*` is
no longer needed.
* Build times has been reduced ~50%: current
times are ~20 mins, and with GitHub Actions
~10 mins.
* Jobs seem to be scheduled faster: a few
seconds compared to minutes.
* Running instances seem more stable: I have
not experienced `ExUnit.TimeoutError` errors
nor memory allocation issues.