Succesful gitlab pages build fails to upload

I am trying to use GitLab pages as a way to preserve a static archive of content from a technical Google+ community. GitLab was attractive relative to GitHub in part because the repository is 1.6GB, of which almost all are lots of relatively small images uploaded by that community over a few years, and not quite 8MB of text; substantial and lots of information but a reasonable amount of text for a pages site.

I ended up with a successful build, which then said:

ERROR: Uploading artifacts to coordinator... too large archive  id=148203433 responseStatus=413 Request Entity Too Large status=413 Request Entity Too Large token=...
FATAL: Too large                                   
ERROR: Job failed: exit code 1

I didn't see anything in the GitLab pages documentation about a smaller size limit for pages than for repositories. I don't even know what the actual limit is. So it's at least possibly a documentation bug (that is, I at least searched for the information before starting) and might be a feature request (new use case for pages).