At the moment, by default,
git-lfs is not installed on the Docker images provided by CircleCI. If you need to utilize it, you have a few options:
1) Manually install it in a custom Docker image and then use that image in your builds
2) Add a step within your config to manually install it, usually early on in the job.
You can find steps on how to install LFS here: https://github.com/git-lfs/git-lfs/wiki/Installation