Merge branch 'ruby-3' into 'master'

Use Ruby 3.0 for the production builds See merge request hifis/hifis.net!242

Merge branch 'ruby-3' into 'master'
7d367af2 · Huste, Tobias · c24e7b10 · 376722c8 · 7d367af2
Commit 7d367af2 authored 3 years ago by Huste, Tobias
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
-image: ruby:2.7
+image: ruby:3.0

 stages:
  - build