How To Make a small GitLab Repo?
Asset
Use LFS for big files: https://docs.gitlab.com/ee/topics/git/lfs/
Artifact
Remove artifact, and disable keeping artifact:
To remove artifact, go to build > artifacts
go to Settings > CI/CD > Artifacts, and disable Keeping artifacts from most recent successful jobs
Manage storage used by package assets
Set number of duplicate assets to keep to 1
Settings > Packages and registries