gitlab-ci: Use the v2021dev2 UML-based image builder (!113) · Merge requests · infrastructure / apertis-docker-images

🔴 v2024.3 entered Hard Code Freeze, changes will not be accepted • schedule

🔴 v2025pre entered Hard Code Freeze, changes will not be accepted • schedule

🟠 v2026dev0 entered Soft Code Freeze/Hard Feature Freeze, only bug fixes will be accepted • schedule