Gitlab Docker won't start

I have a docker gitlab container that will not start. When I attach to the container, this is the only output:

jdonahue@storage:~$ docker attach gitlab
Preparing services...
Starting services...
Configuring GitLab package...
/opt/gitlab/embedded/bin/runsvdir-start: line 37: /proc/sys/fs/file-max: Read-only file system
/opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/json-2.1.0/lib/json/common.rb:156:in `parse': 765: unexpected token at '' (JSON::ParserError)
	from /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/json-2.1.0/lib/json/common.rb:156:in `parse'
	from /opt/gitlab/embedded/service/omnibus-ctl/check_config.rb:32:in `block in load_file'
	from /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/omnibus-ctl-0.5.0/lib/omnibus-ctl.rb:193:in `block in add_command'
	from /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/omnibus-ctl-0.5.0/lib/omnibus-ctl.rb:730:in `run'
	from /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/omnibus-ctl-0.5.0/bin/omnibus-ctl:31:in `<top (required)>'
	from /opt/gitlab/embedded/bin/omnibus-ctl:23:in `load'
	from /opt/gitlab/embedded/bin/omnibus-ctl:23:in `<main>'

I have no idea what is wrong…

bump?