Store designs in Git LFS

Support for uploading versioned designs is being added by https://gitlab.com/gitlab-org/gitlab-ce/issues/56549 which will be stored in a repository. These should be stored using LFS before the feature is made generally available to prevent bloat.

Proposal

Store uploaded designs using LFS since they are binary assets.

Links / references

• See the Git LFS Create Deep Dive https://gitlab.com/gitlab-org/create-team/issues/1