404 Not Found nginx error with basic install

[Jordan Matelsky]

On Ubuntu 14.04, latest Docker. Trying to run:

docker run -d \
    --restart=always \
    -p 80:80 \
    -e REPO=https://github.com/organization/repo.name.git \
    dmcnamara/dockerjekyllpages

Accessing the URL results in a 404 nginx error.

The only thing I've noticed out of the ordinary is that the last line of the Docker logs:

2015-10-28 16:47:10,500 INFO gave up: generate-site-on-start entered FATAL state, too many start retries too quickly

Thoughts?